Two Routine Indexations Will Cost the State 401 Million Euros of Income Tax Next Year, Before Anyone Cuts a Rate

The Portuguese state expects to collect 401 million euros less in personal income tax in 2027 than it otherwise would, and not one cent of that is a new tax cut. The figure comes from the Quadro de Políticas Invariantes (Invariant Policies Framework), the document the Ministério das Finanças (Ministry of Finance) sends to parliament before each budget setting out what happens to the accounts if the government legislates nothing at all. It is dated 31 August and was reported by the ECO.

The 401 million is the delayed cost of two annual indexation rules already applied to 2026 income under this year's budget. For anyone filing an IRS return in Portugal, they are also the two rules that decide how much of your salary or pension is taxed at all.

The dedução específica: 4,587.09 euros

Article 25(1)(a) of the Código do IRS (Personal Income Tax Code) sets the standard deduction for employment income at 8.54 times the Indexante dos Apoios Sociais, the reference figure Portuguese law uses for almost everything. With the IAS set at 537.13 euros for 2026, that produces 4,587.09 euros, against 4,462.15 euros the year before. The IAS rose 2.8 percent, so 124.94 euros more of gross pay drops out of the taxable base before any rate is applied.

Two details matter more than the headline. Under Article 25(2), if your compulsory social-protection contributions exceed the fixed figure, you deduct the contributions in full instead. On the standard 11 percent employee rate that threshold is crossed at roughly 41,700 euros of gross annual pay, so above that level the increase is worth nothing to you. Pensioners get the same threshold by a different route, under Article 53(1).

The brackets moved 3.51 percent

The second rule widened the bands by 3.51 percent, lifting the first from 8,059 to 8,342 euros and the last before the top marginal rate from 83,696 to 86,634. The table now in force under Article 68, as published by the Autoridade Tributária (Tax and Customs Authority), runs: up to 8,342 euros at 12.50 percent; to 12,587 at 15.70; to 17,838 at 21.20; to 23,089 at 24.10; to 29,397 at 31.10; to 43,090 at 34.90; to 46,566 at 43.10; to 86,634 at 44.60; and above that, 48 percent.

Indexing the bands cuts nobody's rate. It stops a pay rise that merely tracks inflation from pushing income into a higher band, which is fiscal drag by another name. The ministry presents both mechanisms as one line and does not say how the 401 million splits between them.

Why it lands in 2027

The tax specialist Carlos Lobo, quoted by the ECO, put the timing plainly: the rules were applied in the 2026 budget to 2026 income, but part of the budgetary effect only materialises at the annual settlement carried out in 2027. The ministry attributes the line to Lei 32/2024 and Lei 34/2024. That is why it belongs in the invariant framework rather than in the budget's list of choices.

What this means for you

• Your 2026 income is already taxed on the new figures. Nothing needs claiming; the deduction and the bands apply automatically when you file next spring.
• Above about 41,700 euros gross, the deduction increase does nothing. Your social-security contributions already exceed it, so you deduct those instead.
• Professional-order members should check Article 25(4). Compulsory dues you cannot practise without can lift the deduction as far as 75 percent of twelve times the IAS. Our guide to filing the Modelo 3 sets out how the pieces fit together.

The company it keeps

The 401 million is one entry in a much larger sum. The same framework puts 4,783 million euros of pressure on the 2027 balance before any new measure is written, a figure we set out on 1 September alongside the 776 million euro rise in the interest bill. It books further revenue losses from the 10 percent rate on moderate rents, a point off corporate tax and the 6 percent construction VAT. Netted out, revenue measures still save 259 million: the pressure is on the spending side.

Joaquim Miranda Sarmento still promises a 2,000 million euro reduction in income tax across the legislature, but has stopped promising a rate cut in 2027 specifically, a position he set out in July. The budget must be tabled by mid-October, and the Socialists have already set their price for letting it pass. The 401 million is the part of next year's income-tax bill nobody in that negotiation gets to vote on.

Feature image: the Serviço de Finanças at Praia da Vitória on Terceira, in the Azores. Photograph by GualdimG, Wikimedia Commons, CC BY-SA 4.0.