Deductible expenses for freelancers in Portugal: what counts in 2026

Summary

• Under the simplified regime (regime simplificado), which applies if your gross Category B income stayed at or below 200,000 euros in the previous year, a coefficient replaces most of the expense bookkeeping.
• A coefficient of 0.75 applies if your activity is listed in the table referred to in article 151 of the IRS code. Other services use 0.35.
• Part of that built-in deduction is conditional. You need to justify 15% of your gross service income with real amounts, or your taxable income goes up by the shortfall.
• A specific deduction of 8.54 times the IAS counts first. With the 2026 IAS of 537.13 euros, that is 4,587.09 euros.
• Costs that are only partly business related count at 25%, not in full.
• Invoices must carry your NIF and be registered through the Portal das Finanças by the end of February of the following year.

Introduction

Most people searching for deductible expenses for freelancers in Portugal expect a list: laptop, desk, phone bill, coffee with a client. That list exists, but it works differently from what you may be used to. If you are a freelancer on green receipts (recibos verdes) inside the simplified regime, you are not deducting your costs one by one. The tax code already assumes a percentage of your income was spent on running the business.

That assumption is not unconditional. A slice of it depends on you proving that you actually spent money, and on those invoices being linked to your tax number and classified correctly. Get the classification wrong and you can lose part of a deduction you had already earned. This article explains how the mechanism works for tax year 2026, which categories count, and how much of each one counts. Rules differ per situation, and this is information, not tax advice.

What can freelancers in Portugal actually deduct?

It depends on which regime you are in. Under the simplified regime, you do not deduct individual expenses. A coefficient is applied to your gross income and the rest is treated as costs. Under organised accounting (contabilidade organizada), you deduct real, documented business expenses. Both routes exist for the same freelancer, and the choice changes everything about paperwork.

The simplified regime applies if your gross Category B income did not pass 200,000 euros in the previous tax year and you have not opted out. Most freelancers and self-employed people on green receipts sit here by default.

Inside that regime, the coefficient does the heavy lifting. For professional activities listed in the table referred to in article 151 of the IRS code, the coefficient is 0.75, so 75% of your gross income is taxable and 25% is treated as costs. For services that are not on that list, the coefficient is 0.35, so 65% is treated as costs. Goods and products use 0.15.

So the real question is not “can I deduct my laptop”. It is whether you still have to prove anything at all. You do.

How does the simplified regime change the way deductions work?

Part of the built-in deduction is conditional. For income taxed at the 0.75 and 0.35 coefficients, 15 percentage points of the deemed costs only stand if you can back them up. Your taxable income is increased by the positive difference between 15% of that gross income and the sum of a fixed list of amounts. You do not lose the whole deduction, only the gap.

That distinction matters, and it is where most online explanations go wrong. If you need to justify 7,500 euros and you justify 6,000, the add-back is 1,500 euros. It is not all or nothing.

The first item on the list helps almost everyone. It is the specific deduction set in article 25 of the IRS code, which is 8.54 times the IAS. With the IAS fixed at 537.13 euros for 2026, that comes to 4,587.09 euros. If your mandatory social security contributions for the activity are higher than that, the higher figure is used instead.

Do the arithmetic and the practical effect is clear. At 15%, an amount of 4,587.09 euros already covers gross service income of roughly 30,580 euros. Below that level, the test is usually met before you add a single invoice. Above it, your own expenses start to matter.

Which expense categories count, and how much of each?

Six groups count toward the 15%. They are the specific deduction or your mandatory social security contributions, staff costs, rent for premises used for the activity, a percentage of the rateable value of property you allocate to the activity, other business purchases such as utilities and materials, and imports or intra-EU purchases made for the activity.

The detail sits in the wording. Other business purchases are listed by name in the law: consumables, electricity, water, transport and communications, rents, litigation costs, insurance, finance lease payments, dues to professional bodies for the taxpayer, and travel and accommodation for the taxpayer and employees. A car itself is not on that list, but transport costs are. The law does not say what sits inside that heading, so whether fuel or tolls invoiced to your NIF count is a question for your own case rather than a settled rule.

Staff costs count only if they were reported to the tax authority through the usual withholding declarations. Imports and intra-EU purchases count only if made specifically and exclusively for the activity, and they go in the annual return.

Table: what counts toward the 15% expense test, tax year 2026

Social security sits slightly apart. Contributions are deductible from income under the 0.75 and 0.35 coefficients only in the part that exceeds 10% of your gross income, and only if they were not already deducted elsewhere. The quarterly declaration to Segurança Social is what sets those amounts, so the two systems are linked in practice even though they are filed separately.

Why partial use cuts your expense to a quarter

This is the rule that surprises people. Rent, the property percentage and the general business purchases count at only 25% when the item is only partly used for the activity. Your home internet, your electricity, the flat you live and work in: all of these are partial by nature, so three quarters of the amount simply does not count toward the test.

The flag is set by you. When you register the invoice through the Portal das Finanças, you say whether the expense is fully or partly allocated to the activity. A phone line used for work and for calling family is not fully allocated, and claiming otherwise is the kind of thing that gets picked up in a review.

Property works the same way. If you own a place and allocate it to your activity, 1.5% of its rateable value (VPT) counts, or 4% if the property is used for hotel or local lodging activities. Allocate it only partly and you get 25% of that figure. You also have to indicate the property and its use through the Portal das Finanças, not just tick a box in the return.

One more point worth knowing: allocating property to a business activity has consequences later, including for capital gains when you sell. That is a decision to think through, not a box to tick for a small deduction.

Why do invoices need your NIF?

Because the tax authority builds your expense file from invoice data, and the invoice only reaches your file if it carries your tax number. An invoice without your Portuguese NIF is invisible to the system. No NIF means no record, and no record means the amount does not count toward the 15%.

Asking for the invoice in your name is only step one. The invoice then lands in e-fatura, where it is sorted into a category. By default, many business purchases arrive as general family expenses or as pending items. Until you move them to your professional activity and set the allocation, they do the wrong job: they feed your personal deductions instead of your Category B expense test.

This is where the two halves of the system meet. The e-fatura invoice validation process that most residents know for health and education receipts is the same machinery that feeds your freelance expenses. Same portal, different drawer.

The law also lets you override the figures. In your annual return you can declare expense amounts that replace the ones the tax authority communicated. That does not remove the duty to prove them if you are asked, so keep the documents.

When do you have to classify invoices in e-fatura?

By the end of February of the year after the invoice was issued. The same deadline applies to indicating which properties are allocated to your activity, exclusively or partly, through the Portal das Finanças. Miss it and the amount is not in the file when your expense test is calculated.

That timing is tighter than the filing season. The IRS return is submitted between 1 April and 30 June, so by the time you sit down to file, the classification window has already closed. Treating e-fatura as a once-a-year job in May is how people lose deductions they were entitled to.

A simple habit solves it. Log in to the Portal das Finanças once a month, clear the pending invoices, and set the allocation while you still remember what the purchase was for. Twelve short sessions beat one long February scramble.

If you want to see how the coefficient and the contributions interact before you plan anything, the self-employment tax calculator gives you a working estimate for your own numbers.

How is this different with organised accounting?

Organised accounting becomes compulsory only if your gross Category B income passed 200,000 euros in two tax years in a row, or passed it by more than 25% in a single year, which means more than 250,000 euros. It then applies from the tax year after that, not retroactively. Below those limits you can still choose it, either in your start-of-activity declaration or by the end of March of the year it takes effect. Here you deduct real costs instead of a coefficient, and a certified accountant signs off the accounts.

Under this route the rules come from the corporate tax code, with specific limits in the IRS code on top. The most relevant one for freelancers: if you use part of your home for the activity, deductible depreciation or rent, energy, water and landline cannot exceed 25% of the documented expenses. The same 25% idea as in the simplified regime, written in a different place.

Other limits apply too. Your own pay as the holder of the income is not deductible, and neither are allowances, use of your own car for work, or meal allowances paid to yourself. If you carry on the activity together with other professionals, deductible costs are shared out according to use, or, where there is nothing to base that on, in proportion to the gross income each of you earns.

The social security side changes as well, though the rate does not follow from the accounting regime. The rate is 21.4% for self-employed workers, including those with organised accounting, and 25.2% for empresários em nome individual with a commercial or industrial activity and for holders of an EIRL. What organised accounting changes is the base: it is built on your taxable profit instead of your quarterly declarations. The monthly contribution base is capped at 12 times the IAS for every self-employed worker, which is 6,445.56 euros in 2026.

Which route costs less depends entirely on how expense-heavy your work is. A consultant with a laptop and a co-working desk usually does better under the coefficient. A photographer replacing equipment, or anyone with staff and premises, may not. Tytle can walk you through the comparison and help you prepare the freelancer registration and green receipts paperwork that goes with the choice you make.