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Self-Employed Tax Reserve Calculator

As a freelancer, no tax is withheld from your revenue the way it is for an employee — you need to set money aside yourself for the tax bill. A common rule of thumb is to reserve 30 to 40% of your profit, so the tax office never comes as a surprise.

%

結果

¥17,500

Recommended reserve

Set aside per month
¥1,458.33
How this was calculated
  1. 1Profit × reserve percentage¥50,000 × 35% = ¥17,500

公式

Reserve = profit × reserve percentage

This is not an official tax calculation but a cautious buffer rule of thumb. The percentage you actually owe depends on your total income, deductions and tax brackets; 35% is a reasonable average guideline for most freelancers with a typical income. Set the amount aside monthly in a separate savings account so you don't accidentally spend it.

ステップ解説

  1. 1Enter your revenue after deducting business expenses (i.e. your profit).
  2. 2Choose a reserve percentage; 30-40% is a common range depending on your income.
  3. 3Check the total reserve amount and the monthly amount to set aside automatically.

計算例

€ 50,000 profit, 35% reserve

€ 50,000 × 35% = reserve € 17,500, or € 1,458 per month.

€ 30,000 profit, 30% reserve

€ 30,000 × 30% = reserve € 9,000, or € 750 per month.

€ 90,000 profit, 40% reserve

€ 90,000 × 40% = reserve € 36,000, or € 3,000 per month.

Reference table

Reserve amount at different profit levels (35%)
ProfitReserve (year)Per month
€ 20,000€ 7,000€ 583
€ 40,000€ 14,000€ 1,167
€ 60,000€ 21,000€ 1,750
€ 80,000€ 28,000€ 2,333

Based on a 35% reserve percentage; adjust it to your own situation.

よくある間違い

  • Reserving based on revenue instead of profit (revenue minus expenses), setting aside too much.
  • Leaving the money in your regular account instead of a separate savings account, so it gets spent by accident.
  • Sticking to a fixed percentage without accounting for rising income moving into a higher bracket.

Important to know

  • This is an indicative rule of thumb, not tax advice. Your actual tax burden depends on your personal situation and deductions.

活用シーン

  • Setting a monthly savings target so the tax bill isn't a surprise.
  • Running a pricing plan or hourly rate to see what's left after tax.
  • Deciding whether it makes financial sense to invest or instead reserve extra this year.

よくある質問

Why 35% and not the top tax rate?

Self-employment deductions and other entrepreneur benefits reduce your taxable profit, so the effective rate is often lower than the top bracket rate.

Should I also reserve for the health insurance contribution?

Yes, as a Dutch freelancer you typically also owe an income-dependent health insurance act contribution; it's wise to include this in your total reserve.

What if I've reserved more than I need?

That's a bonus — you can use the surplus as a buffer for next year or invest it, as long as you're certain the tax bill has already been paid.

How often should I recalculate the reserve amount?

Every quarter is a good rhythm, especially if your revenue fluctuates — this lets you adjust the monthly amount in time instead of discovering a shortfall later.

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