How does the new calculation of income in box 3 work?

For the new calculation of your income in box 3, we use the actual distribution of your savings and investments, and no longer the fictitious distribution that we made. See how it works.

The difference between the old and the new calculation

With the old method, we assumed that you saved part of your assets and invested part of them. If, for example, you only had savings, we still assumed that you invested part of it. We then calculated a fictitious return on that.

The new calculation method is based on the assets you actually have. These are the assets you declared in your tax return. We use fictitious returns that are close to the actual rates of return for savings or investments. For savings, for example, this is much lower than for investments. You can find the percentages per year and type of capital in the table below.

Box 3 income percentages
Type of assets 2017 2018 2019 2020 2021
Savings 0.25% 0.12% 0.08% 0.04% 0.01%
Investments 5.39% 5.38% 5.59% 5.28% 5.69%
Debts 3.43% 3.20% 3.00% 2.74% 2.46%

Your income in box 3

Your income in box 3 is actually called income from savings and investments. If you have received a decision from us stating the income from savings and investments according to the new calculation, you can use our box 3 income tool to see how we calculated it (Dutch only).

How the calculation actually works is explained below.

Calculation of the income from savings and investments

This is how you calculate the income from savings and investments:

  • With the percentages from the table you first calculate the return per type of capital.
  • You add the return on savings to the return on investments and other assets. You reduce the total with the return on deductible debts.
  • Next, you calculate your assets. That is the sum total of the types of assets you have. In other words, your possessions minus your debts. And the debts minus the threshold. You use the assets to calculate the rate of return next.
  • You reduce your assets with the tax-free allowance. Then you have the basis for savings and investments. You use the basis to calculate your income in box 3 with the rate of return. You may divide the basis for savings and investments if you have a tax partner.
  • You calculate the rate of return by dividing the calculated rate of return by your assets. You then multiply the result by 100%.
  • You multiply the rate of return by your share of the basis for savings and investments. Then you obtain your income from savings and investment.

In 2021 you pay 31% tax on the income from savings and investments. Over the years 2017 up to and including 2020 you pay 30% tax.

Calculation example 2021

You have € 350,000 in savings. You have a second home of € 250,000 and a debt of € 90,000. You do not have a tax partner.

Step 1: calculate the return per asset type

Bank balance and savings: € 350,000 x 0.01% = € 35

Other assets: € 250,000 x 5.69% = € 14,225

The return on your assets is € 14,260

The threshold is deducted from the debt.
The deductible debt is: € 90,000 - € 3,200 = € 86,800
The return on the deductible debt is: € 86,800 x 2.46% = € 2,136

The return on your debts is in total € 2,136
The taxable return is € 14,260 - € 2,136 = € 12,124

Step 2: calculate your assets

Assets: € 350,000 + € 250,000 = € 600,000
Deductible debts: € 90,000 - € 3,200 = € 86,800

Total assets: € 600,000 - € 86,800 = € 513,200

Your total assets are € 513,200.

Step 3: Calculate the rate of return

The rate of return for the calculation: € 12,124 / € 513,200 = 2.36%

Step 4: calculate the basis on savings and investment

Assets: € 350,000 + € 250,000 = € 600,000

Deductible debts: € 90,000 - € 3,200 = € 86,800
Tax-free allowance: € 50,000

Basis for savings and investments: € 600,000 - € 86,800 - €50,000 = € 463,200

The basis for savings and investments is € 463,200.

Step 5: calculate the income from savings and investment

The income from savings and investments is the basis for savings and investments x the rate of return.

Income from savings and investments: € 463,200 x 2.36% = € 10,931

You pay 31% x € 10,931 = € 3,388 tax on your assets.