Can I use my full jaarruimte in one go?

Yes. You may contribute your full jaarruimte in a single deposit, spread it across the year, or use part now and part later via your reserveringsruimte.

Many entrepreneurs deposit at year-end, once profit is known. Mind the deadline though: to deduct it in your 2026 tax return, the deposit must be made before 31 December 2026. Calculate with the jaarruimte calculator.