Dutch social security has one number worth memorising: 27.65 per cent, the national insurance charge folded into the first income tax bracket, which you pay and your employer does not.
This guide sets out what that buys, what your employer pays separately, and - the part that trips up Americans - which agency issues the certificate that stops you paying twice.
Registration Comes First
Coverage follows residence and work rather than nationality, so from the day you live or work here the Dutch system applies unless a treaty says otherwise.
Everything starts with registering at the Gemeente and receiving your BSN, the nine-digit citizen service number you keep for life.
Book the appointment before you arrive if you can, bring your passport, a birth certificate and proof of your Amsterdam address, and expect a wait of some weeks in busy months.
Without a BSN you cannot be paid by a Dutch employer, open a Dutch bank account or buy the health insurance the law requires of you.
Employees are enrolled automatically by payroll; if you are self-employed, your national insurance is collected through your own income tax assessment from the Belastingdienst.
What You Pay, And What Your Employer Pays
The system splits in two, and the split decides who is covered for what.
National insurance (volksverzekeringen) covers everyone who lives or works here and funds three schemes: the AOW state pension at 17.90 per cent, the Anw survivor benefit at 0.10 per cent and the Wlz long-term care act at 9.65 per cent.
Together that is the 27.65 per cent, charged only on income within the first tax bracket, which runs to €38,883 in 2026.
Employee insurance (werknemersverzekeringen) is paid entirely by your employer and covers unemployment (WW), long-term disability (WIA) and sickness (ZW).
It does not appear as a deduction on your payslip, and - the point that matters - it does not apply to the self-employed at all.
Health insurance is a third, separate obligation: a basic policy bought from a private insurer within four months of registering, backdated to your arrival.
The average basic premium is about €159 a month in 2026, the cheapest around €142 and the dearest near €185, with a compulsory excess of €385 before cover starts.
If your income is modest you can claim zorgtoeslag, the healthcare allowance, from the Belastingdienst, and it is applied for rather than granted automatically.
The Benefits Newcomers Actually Meet
Most of these are administered by the Sociale Verzekeringsbank, which is where claims and payments go.
AOW, the state pension, is residence-based rather than credit-based: you accrue 2 per cent of the full pension for each year you live or work here between the age of 15 and pension age.
Pension age is 67 in 2026, and ten years of residence gets you 20 per cent of a full AOW - see the pension guide for what that is worth in cash.
Kinderbijslag, the child benefit, is paid quarterly by the SVB for every child under 18 in your household, and requires only that you and the child are registered with a BSN.
Anw pays a surviving partner or children if you die while insured, with entitlement depending on the partner’s age and whether they are caring for children under 18.
WIA is the disability scheme, and it only begins after 104 weeks of sick leave, during which your employer pays at least 70 per cent of your salary.
That two-year employer obligation is the single largest difference between Dutch and American employment, and it is also why the self-employed here carry so much more risk.
Americans: Which Agency Issues Your Certificate
The 1990 US–Netherlands totalization agreement stops you paying into both systems for the same work, and it also lets you combine periods in each country to reach a minimum qualifying record in either.
The certificate of coverage proves which system you belong to, and it is issued by the country whose system you are staying in, which is the detail most summaries of this agreement get wrong.
Posted from the US to Amsterdam for five years or less and staying in US Social Security: your employer requests the certificate from the US Social Security Administration, and it is that document which exempts you from Dutch contributions.
Insured in the Netherlands and seeking exemption from US Social Security or self-employment tax: the certificate is form NL/USA 101, issued by the SVB‘s international secondment department in Amstelveen.
Self-employed Americans covered by the Dutch system attach a copy of the SVB certificate to the US return each year; employers keep theirs on file against an IRS query.
The trade-off is worth stating plainly: if a posting exempts you from Dutch social security, you are also outside Dutch unemployment, sickness and family benefits for its duration.
Within the EU the equivalent instrument is the A1 certificate under Regulation 883/2004, and the general rule is that you are insured where you physically work.
Cross-border remote work is the exception, governed since 2023 by a framework agreement that can keep you insured in your country of residence when you work from home for a foreign employer under a set share of your time.
Frequently Asked Questions
How much do I pay into Dutch social security?
27.65 per cent of income within the first tax bracket, collected as part of payroll tax, split between the AOW pension, the Anw survivor benefit and long-term care.
Employee insurance for unemployment and disability is paid on top by your employer and does not come out of your gross.
Who issues the certificate of coverage for Americans?
The agency of the system you remain in: the US Social Security Administration for a posting that keeps you in US Social Security, the SVB for form NL/USA 101 when you are insured in the Netherlands.
Requesting it from the wrong one is the most common delay on this step.
Can I claim US Social Security while living in the Netherlands?
Yes, and retirement, disability and survivor payments can be made to a Dutch or a US account without reduction for living abroad.
Tax treatment is a separate question and can involve filings in both countries.
How much AOW will I build up?
Two per cent of a full AOW pension for every year of Dutch residence between 15 and pension age, which is 67 in 2026.
Years spent outside the Netherlands do not count, so an arrival at 40 caps you at just over half a full pension.
What happens if I get sick?
An employer must continue paying at least 70 per cent of salary for up to 104 weeks before the WIA disability scheme takes over.
The self-employed have no equivalent and need a private AOV policy to replace that income.
How do I replace a lost BSN?
Ask the municipality for a new confirmation letter; the number itself never changes and is not reissued.
