30% ruling and a Dutch mortgage estimate.
The 30% ruling can make a Dutch mortgage estimate harder to read because a calculator sees income, while the real file may also include employer approval, timing and tax context.
Summary
For a 30% ruling mortgage estimate in the Netherlands, do not assume the calculator has understood the tax position. Use the estimate as a first range, then make the ruling visible in the review request so the income story can be read with more care.
The Belastingdienst describes the 30% facility as an employer-linked tax facility for employees who meet conditions. A public mortgage calculator cannot check those conditions, the employer paperwork or how a specific mortgage file will be read.
Why this matters before you rely on the number
The ruling can change take-home pay, and that makes it tempting to focus on net comfort. Mortgage estimates often start with gross income and then move into rules, documents and lender review. Mixing those layers can make a first estimate feel cleaner than it is.
The review should know whether the ruling is confirmed, pending or only expected. It should also know whether the income includes allowances, bonus, relocation compensation or partner income. Those details can change how useful the calculator result is.
This page stays in the mortgage-estimate lane. It helps you prepare the question for review. It does not tell you whether you qualify for the ruling, how to file tax returns or how a lender will treat every ruling scenario.
Checks to make before the estimate shapes your decision
Write down whether the ruling is approved, expected, expired soon or uncertain. Do not hide uncertainty. It is better for the review to see it early.
Use gross annual income for the calculator input, then explain the ruling separately. Do not turn net pay into a mortgage shortcut.
Add the employment start date, contract type and probation status. A ruling attached to a new job may raise different timing questions than an established job.
Separate fixed salary from bonus, allowance and relocation pay. A single income field can hide how stable the income is.
How to use the Orange Fox calculator for this topic
Run the calculator once with your full gross annual household income. Then write a note beside the result: 30% ruling applies, expected or uncertain. This is the note you should carry into the review request.
Next, test a lower-income scenario if part of the income is variable or uncertain. The gap between the two outputs tells you how sensitive your price range is to income treatment.
Use the payment-to-income and loan-to-value signals as prompts, not verdicts. A ruling-sensitive file needs a review before the output becomes part of a bid or relocation budget.
What to include in your estimate-review request
Say when the ruling started, whether it has been approved and whether any change is expected before or after purchase.
Share base salary, bonus, allowance, partner income and foreign income as separate lines. That makes the estimate easier to read.
Explain whether you need a viewing range, bid range or document-preparation check. The more concrete the decision, the more useful the review can be.
Mistakes that make the estimate weaker
Net comfort matters for your household, yet a mortgage estimate needs to understand the income and document structure behind it.
The ruling sits with employment. A review that misses employer timing or contract details may miss the real question.
A public website cannot promise how every file will be treated. Use the page to prepare the question, then request a review.
Use these sources to verify rule-sensitive assumptions before publication or future updates.
Should I enter gross or net income?
Use the calculator field as requested. For Orange Fox, that means gross annual household income, then explain the ruling in the review request.
Can Orange Fox confirm how a lender treats the ruling?
No. Orange Fox can help prepare the estimate context and route the review, but it cannot issue a lender decision.
Should partner income be included?
Include partner income only if it is part of the household estimate. Explain whether that income is fixed, variable, Dutch or foreign.
Orange Fox gives calculator-led mortgage estimate education and a route to request a review. It does not confirm eligibility, choose a lender, recommend a mortgage product, submit an application, provide tax advice or replace a qualified professional process.
Ready to review the estimate?
Use the calculator first, then send the context you already know so the next step can focus on the assumptions a public calculator cannot verify.