How the 30% ruling affects your FIRE timeline

The 30% ruling is the single biggest financial lever available to expats in the Netherlands. Most people think of it as a salary boost. For FIRE planning, it’s better understood as a temporary high-savings-rate window — and how you use it determines whether it changes your retirement timeline by years or barely at all.

What the ruling actually does

If you qualify, 30% of your gross salary is treated as a tax-free cost reimbursement. In practice, this means your taxable income drops, which reduces your Box 1 income tax and increases both the algemene heffingskorting and arbeidskorting you receive.

The net effect on take-home pay varies by salary level. On a salary of €80,000 to €120,000 gross, the ruling adds about €1,000 to €1,700 a month net in 2026 (worked out with Duit’s income tax calculator). That’s the number that matters for FIRE.

The ruling period as a high-savings-rate window

The ruling lasts a maximum of 5 years.¹ After that, your take-home pay drops back to normal Dutch taxation levels.

The percentage also changes. From 1 January 2027, the maximum drops from 30% to 27% if your ruling started in 2024 or later. If it was already applied to your salary by 31 December 2023, you keep 30% for the whole period.¹

If you were planning to invest €2,000/month on a normal Dutch salary, the ruling might let you invest €3,000–€3,200/month instead. Over 5 years, that’s an extra €60,000–€72,000 in contributions — plus compounding on top of that.

The FIRE math: A ruling that adds €1,000/month net for 5 years = €60,000 extra invested. At 7% real returns over 20 years, that €60,000 becomes ~€232,000. The ruling years are disproportionately valuable because of the compounding runway ahead of them.

The Box 3 exemption ends after 2026

Ruling holders used to be able to choose partial non-resident tax status. With it, Box 3 ignored your savings and investments, apart from Dutch property.

This option closed on 1 January 2025. If you had the ruling before 2024, you can still choose it up to and including 2026, for as long as your ruling runs.² From 1 January 2027, it’s gone for everyone.

After that, your savings and investments above the allowance are taxed in Box 3 like any other Dutch resident’s, wherever they are held.

This changes the FIRE calculation: your portfolio grows faster during the ruling years, but from 2027 at the latest it’s taxed in Box 3 like everyone else’s. In 2026, Box 3 costs about 0.5% to 2.2% a year on the taxable part of your portfolio, depending on how much is in savings and how much in investments.³

Modelling the ruling window in your FIRE plan

The key insight: front-load contributions during the ruling years. The extra net income should go directly into your investment portfolio, not into lifestyle inflation.

A few scenarios worth running:

• Ruling active, investing aggressively: every extra euro from the ruling goes into the portfolio. This is the scenario that moves your FIRE date.
• Ruling active, maintaining lifestyle: the extra net pay goes to higher rent, travel, dining. The ruling makes life better but doesn’t accelerate FIRE.
• Ruling expires: your net salary drops. If you’ve modelled your FIRE number on the ruling-period income, you’ll need to recalculate using your post-ruling take-home.

The ruling expiry cliff

When the ruling ends, your take-home pay drops — sometimes by €1,000+ per month depending on salary. If you haven’t adjusted your financial model, this can derail FIRE plans built on ruling-era assumptions.

Two things to do before the ruling expires:

1. Recalculate your FIRE number using your post-ruling net salary. Your expenses may not change, but your savings capacity will.
2. Run the income tax calculator with your ruling details. It shows your take-home now, from 2027 and after the ruling ends.

What to put in the FIRE Calculator

When modelling your FIRE timeline with the ruling:

• Use your current net monthly savings (what you’re actually investing, ruling included)
• Your FIRE target should be based on annual expenses — not current income, since income will drop after the ruling
• Box 3 drag is automatically included in the calculator’s projection
• The AOW state pension reduces the required portfolio from your AOW age (67 now, 67 and 3 months from 2028)⁴, regardless of the ruling

The ruling’s value for FIRE is entirely in what you do with the extra net income. The calculator makes that explicit.