Proving non-standard income for a mortgage as an expat in the Netherlands usually comes down to one thing: paperwork that shows your income is real, structural and likely to continue. Dutch lenders are used to seeing salaried employees with a single payslip and a permanent contract, so anything outside that pattern, allowances, bonuses, a fixed-term contract, or income tied to the 30% ruling, gets extra scrutiny. That doesn’t mean you’ll be turned down. It means you need to build your file differently from day one.
In the eyes of a Dutch lender, standard income is a fixed monthly salary from an open-ended contract with a Dutch employer, paid in euros. Everything else needs to be explained and backed up. For expats, that usually includes housing allowances, relocation payments, expatriate or international assignment allowances, performance bonuses, income under the 30% ruling, and salary from a fixed-term contract.
Many lenders will count structural allowances toward your qualifying income, provided they’re documented in your employment contract or employer statement and expected to continue. But lenders differ significantly in which allowances they accept and how heavily they weigh them, so the same income package can lead to a noticeably different maximum mortgage depending on which lender you approach.
If part of your income comes from abroad, in a currency other than euros, most lenders simply won’t use it in the assessment. Salary generally has to be paid in euros for a Dutch lender to count it, which is worth knowing before you assume your entire package is bankable.
Once you know which parts of your income are non-standard, the next question is what a lender actually wants to see on paper. In practice, you’re building a file that ties every euro back to something verifiable: a contract clause, an employer statement, or a tax document.
| Income type | Documents lenders typically ask for | Why it matters |
|---|---|---|
| Base salary and allowances | Employment contract, expat-specific employer statement, recent payslips | Confirms the allowance is structural and contractual, not a one-off payment |
| 30% ruling | Formal 30% ruling decision, employer statement | Shows the ruling is active and confirms for how long it still applies |
| Fixed-term contract | Contract plus intentieverklaring (employer’s letter of intent to extend or convert to permanent) | Reduces the risk a lender sees in a contract that isn’t open-ended |
| Foreign income or credit history | Foreign payslips or tax returns, proof of residence permit | Lets a lender assess income and repayment behaviour built up outside the Netherlands |
None of these documents are exotic, but missing even one can stall an application at exactly the moment you don’t want delays: right after you’ve had a bid accepted.
A lot of expats assume that because roughly 30 percent of their salary is paid out tax-free under the 30% ruling, still 30 percent in 2026, their mortgage capacity goes up in step with their net pay. In practice, most lenders calculate your maximum mortgage on your gross taxable income as if your full salary were taxed normally, so the ruling mainly improves what lands in your bank account each month rather than the amount you can borrow.
Some lenders go a step further and stress-test your file for the period after the ruling ends, since under the 2026 rules it can run for up to five years. That’s worth asking about directly, because it affects how comfortable your monthly payment will feel once the tax benefit disappears.
One detail that catches self-employed expats out: if you work as a sole proprietor (eenmanszaak) rather than through your own BV, you can’t use the 30% ruling or the related tax-free reimbursement for extraterritorial costs, since both are payroll-based arrangements tied to an employer. If you’re a director-shareholder (DGA) employed by your own BV, the ruling can still apply as long as you meet the standard conditions around recruitment from abroad, expertise and salary.
A one or two-year contract doesn’t automatically rule you out, but it does raise a question every lender wants answered: what happens when the contract ends? The usual solution is an intentieverklaring, a letter from your employer stating they intend to extend the contract or convert it to a permanent one.
Without that letter, some lenders will still consider your application, but often on more conservative terms, since a fixed-term contract by itself carries more uncertainty than an open-ended one. It’s worth asking your HR department for the intentieverklaring early, rather than scrambling for it once you’ve found a property.
Advisors who work with these cases daily, such as the team of specialists who handle expat files, can usually tell you in advance which lenders are flexible on this point and which ones treat a fixed-term contract as a hard obstacle.
Applications for expats with non-standard income typically take four to six weeks from a complete application to final approval, the same as for any other Dutch mortgage. The catch is the word complete. If a document is missing or a lender asks for clarification on an allowance or the 30% ruling, that timeline resets, and in a market where sellers expect a bid within days, a stalled file can mean losing the property to a buyer with cleaner paperwork.
There’s also a cost you don’t see until later: approaching the wrong lender first. Because lenders weigh allowances and bonus income so differently, applying with a bank that barely counts your allowances can leave real borrowing capacity on the table compared to a lender that treats your income package more generously. Getting that comparison right before you submit anything is usually more valuable than any single document you provide.
If you want to know exactly which documents your situation calls for before you start viewing properties, it’s worth getting your file checked in advance rather than finding out mid-negotiation. You can get in touch to have your income structure reviewed before you make an offer.
Say you’re an expat on a two-year contract, with a housing allowance, a bonus that varies year to year, and a 30% ruling that started eighteen months ago. On paper that looks complicated. In practice, it’s a file that gets built methodically: the contract and intentieverklaring go in first, the allowance gets checked against what each lender actually counts, and the 30% ruling decision is matched against which lenders stress-test for its expiry and which don’t.
From there it’s a matter of comparing your full income picture against roughly 40 Dutch lenders instead of just the one your employer’s HR department happens to recommend, and picking the one whose policy actually fits your income, not a generic expat profile.
De Kredieter holds a 9.8 rating on Google from more than 750 reviews. Reach out via @dekredieter, call 020-5753320, or visit www.kredieter.nl to have your income documentation reviewed before you bid.
