Argentina election calendar and reform pipeline 2026 to 2027

Key rules

1. Who runs elections

Appeals from district judges go to the CNE within 24 hours, and from the CNE to the Supreme Court by extraordinary appeal within 48 hours (Law 26.571 art. 19).

Where the DINE sits. The DINE belongs to the Subsecretaría de Asuntos Políticos of the Vicejefatura de Gabinete del Interior within the Chief of Cabinet's office (Decree 335/2025, recitals; argentina.gob.ar page breadcrumbs). Official news pages from June 2026 nevertheless refer to a "Minister of the Interior" meeting governors about the electoral reform (unconfirmed).

2. The national calendar rules

• Date of general elections. The fourth Sunday of October immediately before the end of mandates (Electoral Code art. 53, as replaced by Law 27.120).
• Call. At least 90 days in advance; the decree must state the date, district, offices and number of seats, how many candidates each voter may choose, and the electoral system (art. 54).
• Presidential election. Direct, with the whole country as a single district and a two round system (Constitution art. 94; Electoral Code art. 148). It must be held within the two months before the incumbent's term ends (Constitution art. 95; Code art. 148). The call covers the eventual second round (art. 148).
• Primaries. First Sunday of August of the election year, called at least 90 days ahead (Law 26.571 art. 20 as replaced by Law 27.781 art. 20). Every party or alliance must choose its candidates for national office in the PASO "even where only one list is presented" (Law 26.571 art. 19). Before Law 27.781 the date was the second Sunday of August, which is the rule cited in the 2021 and 2023 convocation decrees (Decrees 303/2021 and 237/2023, recitals).
• Campaign. The general election campaign starts 60 days before the vote and ends 48 hours before polls open (Electoral Code art. 64 bis, as replaced by Law 27.781 art. 3). For the PASO, the campaign also starts 60 days before; radio and television advertising is banned until 35 days before the vote; everything stops 48 hours before (Law 26.571 art. 31, as replaced by Law 27.781 art. 23).
• Alliances. Must request recognition from the electoral judge up to 80 days before the PASO, with the alliance agreement, its financial agreement, electoral rules and other documents (Law 23.298 art. 10, as replaced by Law 27.781 art. 34).
• Ballot colours. Parties may ask for a colour on the BUP up to 75 days before the PASO; otherwise they get white (Law 26.571 art. 25, as replaced by Law 27.781 art. 21).

3. PASO: status after 2025

Why it matters to investors. With PASO, Argentina has two national votes in a presidential year (August and October) and possibly a third (November runoff). The government itself quantified the 2023 PASO cost at ARS 45,445 million (Presidency news, 15 November 2024), or about US$29.1 million at the 23 Oct 2026 dólar MEP rate, a nominal 2023 peso figure converted at a 2026 rate and therefore only an order of magnitude. Markets historically react to the PASO as an early poll. Whether that "first round before the first round" happens in 2027 is the single largest open point on this page.

Uncertain and contested. The government describes the PASO as a costly "poll at the service of politics" (Presidency news, 15 November 2024). Bills from other legislators move in the opposite direction, for example to tweak rather than repeal the primaries (DINE 2026 bill list). Several provinces suspended their own primaries for 2025 (see section 8). Whether Congress will repeal, suspend again for 2027, or keep the PASO could not be verified (unconfirmed).

4. Presidential runoff (ballotage)

The exact day the current presidential term ends is not stated in the Constitution or in the decrees in the source folder (unconfirmed). In 2023 the runoff was set for 19 November, four weeks after the 22 October general election (Decree 237/2023 arts. 2 and 3).

5. How Congress is elected

• Deputies. Four year terms; the chamber renews by halves every two years (Constitution art. 50). Each province and the City of Buenos Aires is a district (Electoral Code art. 158). Seats are allocated by the D'Hondt method: each list's votes are divided by 1, 2, 3 and so on; the highest quotients win; ties go to the list with more total votes, then by lot (art. 161). Lists below 3% of the district's registered voters (padrón), not of votes cast, get no seats (art. 160).
• Senators. Six year terms, one third of the districts renewed every two years (Constitution art. 56). Each district elects three senators: two for the most voted list and one for the runner up (Electoral Code art. 157).
• What is at stake in 2027. In 2025, 127 deputies were renewed (Decree 335/2025). The chamber has 257 seats (Table 1 of the political and legal system page, computed from the Law 22.847 formula). By subtraction, about 130 deputies are due in 2027 (unconfirmed). In 2025 the Senate seats of Chaco, Entre Ríos, Neuquén, Río Negro, Salta, Santiago del Estero, Tierra del Fuego and the City of Buenos Aires were renewed (Decree 335/2025, recitals). The 2027 Senate renewal will cover another third of the districts, eight districts and 24 seats (unconfirmed).
• Majority thresholds that matter for reforms (quorum 129 of 257 and 37 of 72; two thirds for veto overrides; absolute majority of all members for electoral law, coparticipación and DNU procedure laws) are in Table 1 of the political and legal system page.

6. The single paper ballot (BUP)

• What it is. One ballot per voter that lists all categories in horizontal rows and all parties in columns; the State prints and supplies it (Electoral Code arts. 62, 62 bis, 62 ter, 64 and 65, as replaced by Law 27.781 art. 2 and art. 4). It applies to "all national electoral processes" in the Code (art. 62). For the PASO, Law 26.571 Chapter V also moves to single ballots (Law 27.781 art. 25).
• What changed in practice. Parties no longer print and distribute their own ballots, and the public contribution for ballot printing was dropped (Law 27.781 arts. 28 to 32, amending Law 26.215). Article 98 of the Code was repealed (Law 27.781 art. 27).
• Voting abroad. Argentines resident abroad may vote in person at consulates or by post, using an identical ballot for all countries; the CNE implements both options (Law 24.007 art. 5 bis, added by Law 27.781 art. 40). Postal voting was regulated by Decree 239/2025 (DINE, Digesto Electoral Nacional 2025 page) (unconfirmed).
• Concurrent provincial elections. Provinces and the City of Buenos Aires may hold provincial and municipal elections on the same day and in the same polling places as national ones, under an agreement between the provincial electoral board and the federal electoral judge (Law 15.262 art. 4, as replaced by Law 27.781 art. 38).
• Regulation. Decree 1049/2024 (BO 26 November 2024) regulates the BUP (Infoleg amendment list of Law 26.571).
• First use, 2025. 35,987,634 voters, including 1,139,315 aged 16 or 17 and 490,726 abroad; 17,530 polling places and 109,046 tables; 40,113,265 ballots printed (DINE, "Elecciones Legislativas 2025 en números").
• Measured effect. The DINE's own study found that where two categories were on the ballot, split ticket voting rose from 3% to 6% under party ballots to between 12% and 24% under the BUP, and the lower category (Deputies) absorbed a large rise in blank votes; where only Deputies were elected, blank votes fell (DINE, "La BUP y el comportamiento electoral", conclusions). In 2027 the ballot will carry President, Deputies and, in eight districts, Senators. On the DINE's findings, more ticket splitting between the presidential and legislative rows is plausible, which would make a President without a legislative majority more likely. That is an inference from the study, not a forecast in any official text.

7. Campaign money

• Spending cap. In national elections, campaign spending by a party or alliance per category may not exceed the number of registered voters multiplied by one "módulo electoral" fixed in the annual budget law; no district counts as having fewer than 500,000 voters; the runoff cap is half the first round cap (Law 26.215 art. 45, as replaced by Law 26.571 art. 60) (unconfirmed).
• 2027 module. The 2027 budget bill sets the module at ARS 657.67 (2027 Budget bill art. 71). This is a bill, not law.
• What counts as electoral spending. Electoral advertising, polls commissioned during the campaign, rentals, offices and staff, among others (Law 26.215 art. 45 bis, added by Law 26.571 art. 61).

8. Provincial elections

• Autonomy. Provinces create their own institutions and elect their own authorities "without intervention of the federal government" (Constitution art. 122). Each province has its own electoral law, calendar and voting instrument (DINE, Digesto Electoral Provincial 2025).
• 2025 examples (DINE digest).
• Province of Buenos Aires: provincial legislative elections were split from the national vote and held on 7 September 2025 (Provincial Decree 639/2025); the provincial primaries were suspended for 2025 (Provincial Law 15.522).
• City of Buenos Aires: the City legislature suspended its primaries for 2025 on 21 February 2025 (City Law 6807); local elections were held on 18 May 2025 with an electronic single ballot.
• Chaco: provincial primaries suspended for one year (Law 4130 Q, sanctioned 13 November 2024).
• Entre Ríos: new electoral code with a paper single ballot, keeping provincial primaries (Law 11.190).
• Chubut: first provincial electoral code, with a paper single ballot and the option of simultaneous or concurrent elections (sanctioned 21 November 2024).
• Four provinces held concurrent elections with the national vote on 26 October 2025: Catamarca, La Rioja, Mendoza and Santiago del Estero (DINE, "Elecciones Legislativas 2025 en números").
• 2026. The DINE recorded municipal elections in Mendoza (22 April 2026), Santiago del Estero (2 August 2026) and Marcos Juárez, Córdoba (6 September 2026) (DINE, "Elecciones en Argentina").
• 2027. Governors' terms in most provinces end in 2027, and provinces may choose to hold their elections on the national date, concurrently, or on separate dates (unconfirmed). Split dates mean more election weekends and more months of campaign politics in 2027.

9. How reforms become law

The machinery is explained in depth on the political and legal system page. The points that drive the reform pipeline are these:

Three traps in the pipeline.

1. A bill that is not passed by either chamber lapses at the end of the parliamentary year after the year it was filed; if one chamber passed it in that time, it gets one more year (Law 13.640 art. 1, as quoted by DINE in its 2026 bill report) (unconfirmed). A bill filed in 2026 that has not passed either chamber by the end of the 2027 parliamentary year dies, and the new Congress elected in October 2027 starts again.
2. An overridden veto does not guarantee money. Congress passed Law 27.795 on university funding on 21 August 2025; the Executive vetoed it in full by Decree 647/2025 (10 September 2025); Congress insisted; the Executive then promulgated it by Decree 759/2025 (BO 21 October 2025), stating that under art. 5 of Law 24.629 the law is suspended in its execution until Congress determines its funding sources and includes the appropriations in the budget (Decree 759/2025, recitals and art. 1; Infoleg record of Law 27.795). The Executive relied on an opinion of the Treasury Attorney General's office (Procuración del Tesoro) for this reading (same decree). The point is contested: Congress's insistence under art. 83 is meant to make the bill law, and whether art. 5 of Law 24.629 can freeze it is a legal argument that courts may decide (unconfirmed). Laws 27.793 (disability emergency) and 27.796 (paediatric health emergency) were promulgated on 22 September 2025 and 21 October 2025 (Decrees 681/2025 and 760/2025, Infoleg records) (unconfirmed).
3. Laws often need regulations before they bite. Law 27.802 was published on 6 March 2026, its main regulation (Decree 315/2026) on 4 May 2026, the FAL regulation (Decree 408/2026) on 1 June 2026, and the FAL start was moved to 1 December 2026 by Decree 1228/2026 of 20 October 2026 (Infoleg list of norms linked to Law 27.802). Count months, not days.

Sessions. Congress sits in ordinary session from 1 March to 30 November each year; the President can call extraordinary sessions or extend them (Constitution art. 63). Laws 27.798 and 27.799 were sanctioned on 21 and 26 December 2025, and Law 27.802 on 27 February 2026, outside the ordinary session (Infoleg records) (unconfirmed).

10. Congress after the 2025 midterm

The composition of each chamber by bloc after 10 December 2025 is not available from a permitted source (unconfirmed). What the record does show is legislative output. Between December 2025 and October 2026 Congress passed the first budget law of this administration that appears on Infoleg (Law 27.798), a broad labour and tax law (Law 27.802), two tax procedure laws (Laws 27.799 and 27.826), the glacier law amendment (Law 27.804), the energy subsidy law (Law 27.828), the Mercosur and European Union interim trade agreement (Law 27.800, BO 26 February 2026) and the Mercosur and Singapore free trade agreement (Law 27.819, BO 15 September 2026). The government claimed in March 2026 that the post election Congress was "passing reforms that had never been achieved" (Presidency news, 10 March 2026). Whether the governing coalition holds one third plus one of each chamber, which is enough to sustain a veto under art. 83, could not be confirmed (unconfirmed).

Note also that Infoleg returns no law numbered 27.790, 27.791, 27.792 or 27.794 (searched 26 October 2026), although Laws 27.789 and 27.793 were published in 2025. Gaps in the numbering usually correspond to bills that Congress sanctioned and the Executive vetoed in full without a successful override (unconfirmed).

What an investor should watch, 2026 to 2027

Step by step

A. How a tax reform moves from draft to the Boletín Oficial

This is the first example requested in some secondary summaries. It follows the steps in the Constitution and shows real dates from the fiscal innocence package.

1. Drafting in the Executive. The Ministry of Economy and ARCA draft the bill. Because DNUs cannot touch taxes (art. 99(3)), there is no shortcut.
2. Signature and submission. The President signs a message and the bill goes to Congress. Tax bills must start in the Chamber of Deputies (art. 52). Example: the fiscal innocence bill was presented to Congress on 5 June 2025 (Ministry of Economy news, 5 June 2025).
3. Committee stage. In Deputies the bill goes to committees; the Budget and Finance Committee is the usual one for tax bills (unconfirmed). A committee report (dictamen) is needed before a floor vote (unconfirmed).
4. First chamber vote ("media sanción"). Approval in general and in particular. A chamber may delegate approval of the details to committees by an absolute majority of all its members (art. 79).
5. Second chamber (Senate). If the Senate amends the bill, it returns to Deputies, which may accept the changes or insist on its original text, depending on the majorities each chamber used (art. 81). The will of each chamber must be express; there is no tacit approval (art. 82).
6. Sanction. Law 27.799 was sanctioned on 26 December 2025 (Infoleg record), 204 days after it was presented.
7. Promulgation or veto. The Executive has 10 working days; if it does not act, the bill is deemed approved (art. 80). Partial vetoes are possible, and the unvetoed parts can be promulgated only if they stand on their own (art. 80). Law 27.799 was promulgated by Decree 933/2025.
8. Publication. The law exists for third parties once published in the Boletín Oficial: Law 27.799 on 2 January 2026, seven days after sanction. Unless the law says otherwise, it applies after the eighth day following publication (CCyC art. 5); many tax laws, including Law 27.826 (art. 19), set their own effective dates.
9. Regulation. The Executive issues a regulatory decree under art. 99(2) and ARCA issues general resolutions. For Law 27.799: Decree 93/2026 and ARCA RG 5820/2026, both on 9 February 2026, 38 days after the law.
10. Fixes. Amending laws follow the same route. The government announced amendments on 22 July 2026 (Ministry of Economy news); Law 27.826 was sanctioned on 17 September 2026 and published on 9 October 2026 (79 days from announcement to BO); a new regulatory decree followed on 23 October 2026 (Decree 1253/2026).

Elapsed time. From presentation (5 June 2025) to the operational ARCA resolution (9 February 2026): 249 days, about eight months. The amendment took 79 days from announcement to the Boletín Oficial.

Cost to do it: no fee to follow a bill. All sources are free (Infoleg, Boletín Oficial, argentina.gob.ar, hcdn.gob.ar, senado.gob.ar). Time: six to nine months for a contested tax law on the examples above. Capital: none.

B. How to monitor the pipeline as an investor

1. Weekly: the Boletín Oficial, first section. Every law, decree and resolution takes effect only on publication. Search by your sector's key laws.
2. Weekly: Infoleg amendment lists. For each law that matters to you, open verVinculos.do?modo=2&id=<id> on servicios.infoleg.gob.ar. It lists every later norm that amends or regulates it, with BO dates. This is how this page found Decree 1228/2026 moving the FAL start.
3. Monthly: committee agendas and floor sessions on hcdn.gob.ar and senado.gob.ar (not permitted sources for this page; use them directly).
4. Quarterly: the DINE observatory for electoral bills and calendar documents, and the CNE for the official timetable once the election is called.
5. From March 2027: watch for the convocation decrees. A PASO call must be published by 3 May 2027 if the PASO stays; its absence by that date, or a law suspending them, settles the question.
6. Map each reform to its regulator using Who regulates what. A law that needs an ARCA resolution or a CNV rule is not operational until that text is out.
7. Keep a "lapse" calendar. Note the year each bill was filed; under Law 13.640 a bill not passed by either chamber in its year of entry or the next lapses (unconfirmed).

Cost to do it: internal staff time or an outside monitoring service; no official fees.

Costs and timelines

Table 1. The 2027 electoral calendar under current law

Dates are computed from the statutory rules. The official timetable will be set by the convocation decrees and by the CNE. If Congress changes the PASO rules, the PASO lines fall away and other deadlines move.

Table 2. Electoral thresholds

Table 3. Reform pipeline: status and investor impact (as of 26 October 2026)

This is the second example requested in some secondary summaries. "Status" reflects the Infoleg record and official news in the source folder. Anything else is flagged.

Table 4. Timeline of norms with Boletín Oficial dates

Worked examples

Example 1. The labour reform: from signature to first payment

From signature to the first FAL contribution: 355 days. For planning, assume that a "passed" reform reaches your payroll or tax return 6 to 12 months later.

Example 2. What the FAL costs a mid sized employer

Facts. An MSME (micro, small or medium enterprise under Law 24.467) has a monthly payroll of ARS 50,000,000 that serves as the base for SIPA employer contributions. No employees are in the RIFL regime. The FAL starts on 1 December 2026.

Step 1. Monthly FAL contribution. MSME rate 2.5% (Law 27.802 art. 60). ARS 50,000,000 × 2.5% = ARS 1,250,000 per month, about US$799.

Step 2. Offset. The employer gets a reduction in employer social security contributions equal to the FAL rate (art. 76). Net change in total monthly cash out: ARS 0, as long as the reduction is applied correctly. If the FAL is not yet in force, or the employer is exempted from the FAL, the reduction does not apply (art. 167).

Step 3. Where the money goes. The ARS 1,250,000 goes to a separate, unattachable account in a fund run by a CNV authorised entity chosen by the employer (arts. 59 and 62), invested under Ministry of Economy Res. 1276/2026.

Step 4. Twelve months. ARS 1,250,000 × 12 = ARS 15,000,000, about US$9,591, before returns. The minimum waiting period before the fund can pay out is 12 complete monthly periods counted from the first effective contribution recorded at ARCA (Decree 408/2026 art. 15, as replaced by Decree 1228/2026). The fund covers only workers registered for at least 12 months before dismissal (Law 27.802 art. 58).

Step 5. Upside risk. If the Executive raises the MSME rate to 3% with approval of the bicameral committee (art. 60), the annual amount becomes ARS 50,000,000 × 3% × 12 = ARS 18,000,000 (about US$11,510). Whether the contribution reduction under art. 76 rises by the same amount depends on how "equivalent" is read (unconfirmed).

Large company comparison. At 1%, the same payroll gives ARS 500,000 a month and ARS 6,000,000 a year (about US$3,837).

Reading for investors. The FAL is designed to be cash neutral on payroll taxes, but it moves cash into a restricted fund and changes the cost of dismissals. It also starts five months after the Bases Law era has ended and less than a year before the 2027 vote. A new Congress could change it. That is a political risk, not a rule.

Example 3. Fiscal innocence: when does ARCA's adjustment break the presumption?

Facts. An individual filed a 2025 income tax return under the simplified regime and declared tax of ARS 20,000,000. ARCA reviews the return.

Rule. There is a "significant discrepancy" if ARCA's adjustment increases the tax by at least 15% of the declared tax, unless the difference is no more than 5% of the criminal evasion threshold in art. 1 of the Criminal Tax Regime. The threshold is ARS 100,000,000 (Law 27.799 art. 1), so the floor is ARS 5,000,000 (about US$3,197). An adjustment above ARS 100,000,000, or one based on false invoices or improper credits, is a discrepancy regardless (Law 27.799 art. 40, as amended by Law 27.826 arts. 5 and 6).

Case A. ARCA claims ARS 4,000,000 more. 4,000,000 ÷ 20,000,000 = 20%, above 15%. But 4,000,000 ≤ 5,000,000, so no significant discrepancy; the presumption of accuracy holds.

Case B. ARCA claims ARS 6,000,000 more (about US$3,837). 6,000,000 ÷ 20,000,000 = 30%, and 6,000,000 > 5,000,000, so significant discrepancy. The taxpayer can still keep the regime's protection by filing a corrected return and paying the difference plus interest within 15 working days of notice of the assessment (Law 27.799 art. 40, last paragraphs added by Law 27.826 art. 6).

Case C. Declared tax ARS 200,000,000; ARCA claims ARS 25,000,000 more. 25,000,000 ÷ 200,000,000 = 12.5%, below 15%, so no significant discrepancy even though the amount is five times the floor.

Why it is on this page. Laws 27.799 and 27.826 show how a reform is refined after enactment, and how its main parameter (the ARS 100,000,000 criminal threshold) is a nominal peso figure fixed by Congress. With 29.0% inflation projected for 2026 and 18.0% for 2027 (2027 Budget bill summary), the real value of the threshold erodes unless Congress updates it (unconfirmed).

Example 4. The campaign spending cap for a 2027 presidential ticket

Rule. Cap per category per party = registered voters × 1 módulo electoral; runoff cap = half (Law 26.215 art. 45 as replaced by Law 26.571 art. 60).

Inputs. Module ARS 657.67 (2027 Budget bill art. 71, not yet law). Registered voters: the 2027 roll is not yet published, so this example uses the 2025 figure of 35,987,634 (DINE) as a proxy.

Step 1. First round cap, presidential category. 35,987,634 × 657.67 = ARS 23,667,987,253, about US$15.13 million.

Step 2. Runoff cap. ARS 23,667,987,253 ÷ 2 = ARS 11,833,993,626, about US$7.57 million.

Step 3. Smallest district floor for Deputies. No district counts as having fewer than 500,000 voters: 500,000 × 657.67 = ARS 328,835,000, about US$210,266 per party in each small district.

Caveat. The cap applies "for each category"; whether the presidential cap uses the national roll and how it interacts with the PASO cap depend on the current text of Law 26.215 and its regulation (unconfirmed). The budget bill may change before enactment.

Example 5. Turning votes into Deputies seats (D'Hondt with the 3% floor)

A district elects 5 deputies and has 1,000,000 registered voters. The seat floor is 3% of the roll: 30,000 votes (Electoral Code art. 160).

Ranking the quotients: 360,000 (A), 240,000 (B), 180,000 (A), then three quotients of 120,000 (A, B and C) for the last two seats. Ties go to the list with more total votes (art. 161(c)), so A then B. Result: A 3, B 2, C 0. List C had 16.6% of valid votes for these four lists and won nothing; this is how a fragmented field can hand a majority of a district's seats to the leader.

Practical traps

1. "The PASO were eliminated." They were not. They were suspended for 2025 only (Law 27.783 art. 1). Contracts, financing schedules or launch plans that assume a single October vote in 2027 should carry a PASO scenario until a new law is published.
2. Using the old PASO date. Since Law 27.781 the PASO date is the first Sunday of August, not the second (Law 26.571 art. 20). Older guides and the 2021 and 2023 decrees cite the second Sunday.
3. Expecting a tax or electoral change by DNU. Art. 99(3) bars DNUs on taxes and electoral matters. If you read about a "tax decree", check whether it is a regulatory decree under an existing law (for example a rate the law lets the Executive set) or an exercise of delegated power with a valid base.
4. Counting the Bases Law delegation as still open. It ran for one year from July 2024 and has expired (Law 27.742 art. 1). New delegated decrees need a new delegation law.
5. Treating "law" as "in force". Law 27.802 was published in March 2026 but the FAL starts in December 2026 and the health contribution change in January 2027. Read the effective date clause of each article.
6. Treating a promulgated law as funded. Decree 759/2025 promulgated Law 27.795 and declared it suspended under Law 24.629 art. 5. The legal effect of that suspension is contested.
7. Reading a political speech as a result. The only official text on the 2025 seat outcome in the sources is a government speech. Use certified results from the electoral courts for any analysis (unconfirmed).
8. Ignoring the BUP effect. DINE's study shows much more ticket splitting with the BUP. A strong presidential result in 2027 may not translate into a legislative majority.
9. Provincial dates. Provinces can split their elections from the national vote, as Buenos Aires province did in 2025. A province where you hold a concession may vote on a different weekend (unconfirmed).
10. Bill lapses. A bill you are lobbying for, filed in 2026, may lapse at the end of 2027 if neither chamber passes it (unconfirmed).
11. Nominal peso thresholds. The ARS 100,000,000 criminal tax threshold, the ARS 5,000,000 discrepancy floor and the electoral module are nominal. Inflation erodes them each year.

Recent changes

• 18 Oct 2024. Law 27.781: BUP for national elections; PASO moved to first Sunday of August; postal vote abroad; concurrence of provincial elections.
• 15 Nov 2024. Executive announces bill to eliminate the PASO and reform party law and financing.
• 26 Nov 2024. Decree 1049/2024 regulates the BUP.
• 7 Mar 2025. Law 27.783 suspends the PASO for 2025 only.
• 20 May 2025. Decree 335/2025 calls the 26 October 2025 election.
• 10 Sep 2025. Decree 647/2025 vetoes the university funding bill (Law 27.795).
• 21 Oct 2025. Law 27.795 promulgated after the veto by Decree 759/2025, declared suspended under Law 24.629 art. 5; Law 27.796 promulgated by Decree 760/2025.
• 26 Oct 2025. National legislative election; first national use of the BUP.
• 11 Nov 2025. Economy Minister announces labour and tax reforms aimed at formalisation and says governors have expressed support (Ministry of Economy news).
• 20 Nov 2025. Chief of Cabinet and Interior meet governors on the 2026 budget and the reform package of labour modernisation, tax reform and an update of the Criminal Code (Chief of Cabinet's office news).
• 2 Jan 2026. Laws 27.798 (2026 Budget) and 27.799 (fiscal innocence) published.
• 6 Mar 2026. Law 27.802 (Labour Modernisation, RIMI, tax chapter) published.
• 10 Mar 2026. President announces "90 reform packages" to be sent to Congress in 2026.
• 9 to 16 Jun 2026. Official meetings with governors on the pending electoral reform.
• 22 Jul 2026. Government announces amendments to the fiscal innocence law.
• 15 Sep 2026. 2027 Budget bill sent to Congress.
• 9 Oct 2026. Law 27.826 published.
• 13 Oct 2026. Law 27.828 (energy, cold zone, renewables) published.
• 16 to 20 Oct 2026. DINE starts proceedings to redraw electoral circuits in several districts (Dispositions 1 to 12/2026).
• 20 Oct 2026. Decree 1228/2026 sets the FAL start for 1 December 2026.
• 23 Oct 2026. Decree 1253/2026 amends the regulation of Law 27.799.

Pending changes

• PASO 2027: repeal, suspension or confirmation (unconfirmed).
• Government electoral reform bill: content (party law, financing, PASO) and stage (unconfirmed).
• 2027 Budget: vote in Deputies and Senate; final module electoral value (unconfirmed).
• Congress composition 2025 to 2027 and the official 2025 results (unconfirmed).
• 2027 Senate districts and deputies per district (convocation decree, 2027) (unconfirmed).
• Provincial 2027 calendars and any provincial PASO suspensions (unconfirmed).
• Comprehensive tax reform beyond Laws 27.799, 27.802 and 27.826, and any fiscal pact with provinces on gross income tax (unconfirmed).
• Pension reform: none found; benefits follow DNU 274/2024 monthly CPI indexation (unconfirmed).
• New coparticipación law: still not enacted (unconfirmed).
• Laws 27.793, 27.795 and 27.796: funding and the effect of Law 24.629 art. 5 (unconfirmed).
• FAL rate increases to 1.5% and 3% under Law 27.802 art. 60: none found (unconfirmed).
• Bills numbered 27.790 to 27.792 and 27.794: not on Infoleg; likely vetoed (unconfirmed).

FAQ

1. Will Argentina hold primaries (PASO) in 2027? Under current law, yes, on Sunday 1 August 2027 (Law 26.571 art. 20 as replaced by Law 27.781). The 2025 suspension in Law 27.783 covered 2025 only. Congress can change this by a law passed with an absolute majority of all members of each chamber (Constitution art. 77). Whether it will is open (unconfirmed).

2. When is the 2027 presidential election? Sunday 24 October 2027, the fourth Sunday of October (Electoral Code art. 53), with a possible runoff within 30 days (Constitution art. 96). The official dates will be set in the convocation decree, which must be issued at least 90 days ahead (Electoral Code arts. 54 and 148).

3. What vote share avoids a runoff? More than 45% of valid affirmative votes, or at least 40% with a lead of more than 10 percentage points (Constitution arts. 97 and 98). Blank votes do not count as affirmative votes.

4. Can the President change tax rules or the election calendar by decree? No. DNUs are barred on tax, criminal, electoral and party matters (Constitution art. 99(3)). The Bases Law delegation has expired. Regulatory decrees can only implement what a law allows.

5. What did the 2025 midterm change in Congress? It renewed 127 deputies and 24 senators (Decree 335/2025). The government says it won half the Deputies seats and two thirds of the Senate seats at stake (Presidency news, 10 March 2026). Certified results and bloc counts are not in permitted sources (unconfirmed). After the election Congress passed the 2026 Budget, the labour law and the fiscal innocence laws.

6. Is the labour reform fully in force? Mostly. Law 27.802 was published on 6 March 2026 and regulated from May 2026. The severance fund (FAL) starts on 1 December 2026 (Decree 1228/2026) and the health contribution change applies from 1 January 2027 (art. 165). Some repeals take effect in 2027 and 2028 (Title XXVI).

7. Is there a tax reform pending? Parts of the announced tax reform were enacted through Law 27.802 (excise repeal, income tax changes, VAT), Law 27.799 and Law 27.826. Any further comprehensive bill could not be confirmed (unconfirmed). Tax bills must start in Deputies (art. 52).

8. What happens if the 2027 Budget is not passed? The 2027 bill is pending. The legal consequence of a budget not approved by 1 January is set by the Financial Administration Law 24.156, which was not downloaded for this page (unconfirmed). In practice, investors should watch for the vote in November and December 2026.

9. How does the single paper ballot affect investors? It reduced party control over ballots and, on the DINE's own study, sharply increased split ticket voting in 2025. A President elected in 2027 may face a more fragmented Congress, which affects how fast reforms can pass.

10. Do provinces vote on the same day? Not necessarily. Provinces set their own calendars and may hold concurrent elections with the national vote (Law 15.262 art. 4) or split them, as Buenos Aires province did on 7 September 2025. Check each province's electoral court for 2027 (unconfirmed).

11. Where do I check that a reform is really law? In the Boletín Oficial and on Infoleg. A bill with "media sanción" has passed one chamber only. A law with a later effective date, or that needs a regulation, is not yet operational.

12. Can a vetoed law still apply? If both chambers insist by two thirds, the bill becomes law (art. 83). In October 2025 the Executive promulgated an insisted law but declared it suspended until Congress funds it, citing Law 24.629 art. 5 (Decree 759/2025). That position is contested.

Primary sources

• Constitution (Law 24.430) (Infoleg,
• Law 19.945, National Electoral Code, updated text
• Law 27.781 (BUP), BO 18 October 2024
• DINE, Elecciones Legislativas 2025 en números
• DINE, La BUP y el comportamiento electoral
• DINE, Digesto Electoral Nacional 2025
• Law 27.795 and its veto and promulgation
• Law 27.826
• Ley de Presupuesto 2027 page
• Electoral strengthening bill announced, 15 November 2024

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