Tax partner as a freelancer: what you can split together and what you cannot
Written by Ilias Aarrass6 min read · Published on · Last reviewed on 
In short
With a tax partner you split box 3 and personal deductions freely, in any ratio from 0 to 100 percent, but your business profit stays entirely with you.
- Together with a tax partner € 118,714 of assets is exempt in box 3 in 2026, € 59,357 per person.
- In 2026 a deduction yields at most 37.56 percent even in the top bracket, so the difference between partners is limited.
- Living together unmarried only makes you tax partners if you meet an extra condition, such as a notarial cohabitation agreement or a child together.
- If your partner works in your business, you lower your profit through the partner deduction from 525 hours or a labour reward of at least € 5,000.
If you are married or live together, you often have a tax partner for income tax. It sounds like a formality, but it has real consequences: a few items in your return can be split freely between you, and that split can make a difference of hundreds of euro. At the same time there is a persistent misunderstanding among freelancers: that you can also place part of your business profit with your partner. You cannot. This article explains who your tax partner is, what you can split together, what stays with each person and which routes exist if your partner genuinely works in your business.
Who is your tax partner?
If you are married or in a registered partnership, your spouse is automatically your tax partner. If you live together unmarried, you are tax partners when you are registered at the same address and meet at least one extra condition. The best known are a notarial cohabitation agreement, a child together or a recognised child of the other, and having already been tax partners the year before. There are a few other criteria; the filing software walks you through them step by step.
If you became partners during the year, for example through marriage, in many cases you may choose to be treated as tax partners for the whole year. That is usually favourable, because you can then split over the full year. Worth knowing: tax partnership is not a switch you turn on or off. If you meet the conditions you are partners, even where that works out badly, for instance with benefits, where similar rules apply and your incomes are added together.
What you may split freely
The law recognises a number of joint items that you may split in any ratio you like, from 0 to 100 percent. For a freelancer two groups matter most. The first is your box 3 base: assets such as bank balances and investments above the tax-free allowance, which is € 118,714 together with a tax partner. The second is personal deductions, such as gifts to charities and specific healthcare costs. If you have a private limited company, income from box 2 is also one of the items you can split.
How you split box 3 makes little difference, because the rate is the same for everyone. Personal deductions are different: a deduction yields more with the partner who has the highest box 1 rate, although the difference is limited, because in 2026 a deduction yields at most 37.56% even in the top bracket. More importantly, if one of you has little income, a deduction can be partly lost with that person. The filing software often proposes a favourable split itself; check it, because you know your situation best. More on box 3 assets in box 3 for freelancers.
| Item | Split with tax partner? | Explanation |
|---|---|---|
| Box 3: assets above the allowance | Yes, split freely | € 118,714 exempt together |
| Personal deductions | Yes, split freely | Usually best with the highest rate |
| Box 2 income | Yes, split freely | Only relevant with shares in a company |
| Business profit | No | Stays with the entrepreneur |
| Self-employed deduction and SME profit exemption | No | Tied to your profit and your hours |
| Tax credits | No | Per person, depending on own income |
Your profit stays yours
Business profit belongs to whoever runs the business. You cannot shift it to your partner in your return, not even if your partner has a lower rate. The same goes for the entrepreneur's deductions: the self-employed deduction of € 1,200 depends on your hours, the SME profit exemption of 12.70% on your profit. If your partner does not work in your business, there is no tax route to share your profit.
What does carry through is that your incomes touch each other elsewhere. With a high profit, for instance, you benefit more from a deduction than your partner does, and the size of the tax credits depends for each of you on your own income. Anyone wanting to optimise the whole therefore looks at both returns together, not at one person's.
Does your partner work in the business? Then there are three routes
If your partner genuinely works in your business, you can lower your profit another way. The simplest route is the partner deduction: if your partner works at least 525 hours a year without pay or for less than € 5,000, you deduct a percentage of your profit, from 1.25 to 4 percent depending on the hours. Your partner pays nothing on it. The second route is a labour reward of at least € 5,000 a year: you deduct it in full, and your partner declares it as their own income. The conditions are worked out in working partner and partner deduction.
The labour reward is especially interesting if your partner has little other income: the reward then falls into a low bracket for your partner, while you deduct it at your higher rate. Below € 5,000 the reward is not deductible for you; the partner deduction is then the more obvious choice. Keep the arrangements businesslike: a written agreement, an hour log for your partner and a real payment through the bank. The third route is running the business together as a general partnership, in which you are both entrepreneurs and each receives their own deductions, provided you both meet the 1,225 hour criterion.
Frequently asked questions
Can I declare part of my profit with my partner?
No. Business profit stays with the entrepreneur. Only if your partner genuinely works in the business are there routes: the partner deduction, a labour reward of at least € 5,000 or a general partnership together. If you separate, the value of your business goes into the division; see divorcing with your own business.
Do we file one joint return?
No, each of you files your own return, but the split of joint items must match in both. So fill them in shortly after each other, see income tax return.
Can I change the split later?
Yes. As long as the assessment is not yet final, you can still change the split of the joint items, for example through an objection.
Does my partner's income count for my self-employed deduction?
No. The self-employed deduction depends on your hours and your profit. Your partner's income plays no part in it.
Sources
- When are you tax partners?Belastingdienst · belastingdienst.nl
- Filing with your partner and splitting joint itemsBelastingdienst · belastingdienst.nl
- Box 3 calculation 2026 and the tax-free allowanceBelastingdienst · belastingdienst.nl
Sources checked on
This article provides general information based on the rules known for 2026 and does not replace personal tax advice. For your specific situation, we're happy to take a look with you.
