Freelancer Social Security Contributions Compared (2026)

Income tax gets compared across countries constantly. Social security almost never does, even though for a freelancer earning a normal professional income it is frequently the larger of the two bills and always the more structurally strange one. It is not a rate applied to profit. Depending on where you are it is a percentage of a fraction of your invoices, a flat monthly fee that ignores what you earned, a charge that attaches to nothing at all, or a scheme you may join if you feel like it.

Here is what six countries actually charge a self-employed person in 2026.

The table

Country	What a freelancer pays	Levied on	Annual floor	Annual ceiling
Portugal	21.4%	70% of invoiced services	€240	€16,552.20
Spain	Flat monthly quota by income band	Net income band	€2,470.56	€7,288.20
Estonia (OÜ)	Nothing on retained profit	—	€0	—
Georgia (small business status)	Nothing; pension scheme voluntary	—	€0	—
UAE (expatriate)	Nothing	—	AED 60 (ILOE)	AED 120 (ILOE)
Singapore (foreign pass holder)	Nothing; CPF is for citizens and PRs	—	S$0	—

Three of these six charge a freelancer nothing, which makes the comparison less about who is cheap and more about what the two systems that do charge are charging for. That comes at the end.

Portugal: a percentage that behaves like one

Portugal’s design is the most conventional and the easiest to predict. The contribution rate for the self-employed is 21.4%, and it applies not to your invoices but to relevant income — for services, 70% of what you billed. The two numbers multiply out to a clean effective rate:

21.4% × 70% = 14.98% of everything you invoice.

That figure holds at every income level until the base hits its ceiling of 12 × IAS, which for 2026 is €6,445.56 a month — the IAS itself being €537.13.

Gross invoiced	Monthly contribution	Annual contribution
€20,000	€249.67	€2,996.00
€30,000	€374.50	€4,494.00
€50,000	€624.17	€7,490.00
€75,000	€936.25	€11,235.00
€100,000	€1,248.33	€14,980.00
€110,495 and above	€1,379.35	€16,552.20

There is also a floor: the minimum monthly contribution is €20, so even a dormant registration costs €240 a year.

The ceiling is worth reading twice. It only starts to bite at about €110,495 of annual invoicing, which is above the €100,000 mark where most freelance careers stop. For practical purposes Portugal charges a flat 14.98% of turnover with no upper limit at all.

Spain: a flat fee that behaves like a tax on being small

Spain charges autónomos a monthly quota rather than a percentage. The quota is set by which of fifteen income bands you fall into, and within each band it does not move. The rate that generates it — 30.6%, or 31.5% including the MEI solidarity mechanism — is applied to the band’s official minimum contribution base, not to your income.

Net income band (€/month)	Monthly quota (with MEI)	Annual	Rate at the top of the band
Up to 670	€205.88	€2,470.56	30.7%
Up to 1,300	€299.56	€3,594.72	23.0%
Up to 1,700	€302.65	€3,631.80	17.8%
Up to 2,330	€401.47	€4,817.64	17.2%
Up to 3,190	€452.94	€5,435.28	14.2%
Up to 4,050	€504.41	€6,052.92	12.5%
Up to 6,000	€545.59	€6,547.08	9.1%
Above 6,000	€607.35	€7,288.20	10.1% and falling

Read the right-hand column downwards and the system’s real shape appears. An autónomo netting €670 a month hands over 30.7% of it. One netting €6,000 hands over 9.1%. One netting €20,000 hands over the same €607.35 — barely 3%. Spain’s contribution is regressive by construction: the flat quota is a small charge on a large income and a very large charge on a small one.

The ceiling is the other half of the story. €7,288.20 is the most any autónomo can pay in 2026, at any income, forever. A Portuguese freelancer reaches that same annual amount at just under €48,700 of invoicing and keeps climbing past it.

Two mechanics complicate the table and are not optional reading:

• The band is set by net income, defined as net income plus the social security quotas you paid, minus a 7% generic deduction, divided by months of activity. It is not your invoicing, and it is not the profit figure on your tax return either.
• The band is provisional. Seguridad Social regularises it later against the income Hacienda actually recorded, so an under-declared band produces a bill, not a saving. You may adjust your declared income six times a year.

New autónomos can also apply the cuota reducida — the flat rate that has run at €80 a month — for the first twelve months, with a further twelve available if net income stays below the minimum wage. The amount that applies from 2026 is set by each year’s budget law and no such law has been approved, which is covered in full in our tarifa plana guide.

Where nothing is charged

The other three countries in the table are not cheaper versions of the same thing. They charge nothing because nothing in their design attaches a social contribution to a self-employed person.

Estonia. An e-resident’s OÜ pays no tax at all on profit it retains — EMTA’s wording is that where a company invests profit rather than distributing it, there is no tax liability. Distributions are taxed at the company, at 22/78. No self-employment contribution exists in this structure, because in it you are not self-employed: you are a company that has not paid you yet. Board member fees are the exception, carrying 22% Estonian withholding.

Georgia. Small business status taxes 1% of turnover and stops there; the Tax Code attaches nothing else to it. Georgia does run a funded pension scheme, built on employers, employees and the state each contributing 2% of salary, but its self-employment arm is voluntary — a self-employed person may make a contribution when declaring their annual income, and may equally not.

UAE. There is no personal income tax and no social security charge on expatriate workers. What exists instead sits on the employer’s side: end-of-service gratuity, and ILOE unemployment insurance at AED 60 or AED 120 a year depending on salary band — an amount small enough to be a rounding error against any of the European figures above.

Singapore. CPF contributions apply to Singapore citizens and permanent residents. A foreign pass holder neither receives nor pays them.

What the number buys

A zero in a contributions table is a price, not a gift, and the thing being purchased in Portugal and Spain is coverage — public healthcare, sick pay, parental leave, and a state pension whose eventual size depends on the base you contributed on, not the quota you paid.

This is where the Spanish system’s regression turns into a second, quieter effect. Because most autónomos are billed on their band’s minimum base, they accrue pension rights on that minimum base too. Paying the smallest legal quota for thirty years buys the smallest legal pension. Spain lets you contribute on a higher base within your band, which raises the quota now and the entitlement later — an option almost nobody exercises.

And a zero elsewhere does not mean you are covered for free. It means you are covered by whatever you buy privately, or by the system of the country you are actually resident in — which is a separate question with its own rules. Within the EU, only one country’s social security legislation may apply to you at a time, and it is not necessarily the one taxing your income. We work through that in social security when you work across borders.

What this table is not

The bases are not comparable line by line, and pretending otherwise is the standard flaw in cross-country contribution tables. Portugal charges on 70% of gross invoices for services (20% for goods). Spain charges on a band derived from net income after a 7% generic deduction. The two systems do not measure the same quantity, so the euro amounts here are directly comparable while the percentages are only comparable within a country.

Everything above assumes a working-age individual freelancer contributing under the standard regime, in mainland Portugal or under Spain’s national rules, with no first-year reduction applied. Portugal’s contributory obligation does not even begin until the first day of the twelfth month after you register an activity, so a first year in Portugal is close to free — a detail that flatters any comparison built on year-one figures. The Portugal freelancer guide and the Spain autónomo guide work through each country’s full picture, and the five-country net income comparison puts tax and contributions together on one figure.

Figures verified against the official sources listed below. Spain’s quota table is fixed annually by ministerial order and Portugal’s ceiling moves with the IAS, so both reset every January.