Older fiscal-partner households can face a repayment when an old box 2 loss becomes a box 1 tax credit. For a lower-earning partner born before 1963, that credit can reduce a general tax credit payment already received. Two tax assessments can therefore change the same household cash balance.
Why this matters
After a share sale or company closure, an unrelieved box 2 loss can remain in the tax file. If the conditions are met, it can become a credit against box 1 tax. For 2026, the published conversion percentage is 24.50%. The loss must be final in an income tax assessment. Neither fiscal partner may have held a substantial interest in the credit year or the year before. The credit can lower one assessment and reduce the partner payment on the other. The published 2026 maximum payment is €3,115.
Example
A retired founder has a final box 2 loss from a closed holding company. Their spouse has little taxable income and receives a general tax credit payment. They use the refund for home repairs. Later, the box 2 loss reduces the founder’s box 1 tax. That leaves less tax to support the spouse’s earlier payment. Part of the refund may be recovered. Put both assessments, decisions and bank payments on one timeline to see the household result.
XTROVERSO tips
- Check the loss and dates. Confirm that the box 2 loss is final. Record the conversion request, decision, credit year and percentage in the tax file. Check the substantial-interest condition for each partner.
- Keep both assessments together. List provisional and final assessments for both partners. Add objections, reductions, decisions, refunds and payment dates.
- Reserve linked refunds. Do not spend a partner-related refund while the other assessment can still change. Keep cash aside for a possible repayment.
- Calculate the household total. Show the tax reduction, any lower partner payment and the final cash difference. A credit in one assessment can reduce a payment in the other.
- Use the right route. Challenge an incorrect tax calculation through the assessment or objection process. If a correct assessment causes payment difficulty, ask the collector about a payment arrangement.
Need a clear view of both assessments and household cash? Our team can map the dates, decisions and possible repayment
The data, sourcing, and analysis behind this article were conducted by Linda Pavan. AI was not used to identify sources, build the factual basis, or produce the analytical judgment contained here. AI was used only as a drafting aid. The final English text was personally reviewed, edited, and approved by Linda Pavan before publication.
References
- Belastingdienst – Verlies uit aanmerkelijk belang omzetten in belastingkorting
- Belastingdienst Kennisgroepen – Omzetting verlies uit aanmerkelijk belang
- Belastingdienst – Uitbetaling algemene heffingskorting aan fiscale partner
- Belastingdienst – Heffingskortingen 2026
- Belastingdienst – Verzoek betalingsregeling voor particulieren
- Rechtspraak – Betalingsregeling behoort tot de invordering
