The With fiscal partner toggle doubles the tax-free allowance in the box 3 calculation, so you can see how much tax you owe together with your partner.
Enable or disable With fiscal partner
Go to box 3 return;
Scroll to the Wealth outside Protiva section;
Turn the With fiscal partner toggle on or off.
The calculation updates automatically after a short delay. Nothing is saved: the setting applies only while the page is open.
Updated on 8/30/2026
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