Prices the eindheffing on your 2026 werkkostenregeling overrun while 31 December can still fix it
| Free space available | — | EUR |
|---|---|---|
| Designated: booked plus planned | — | EUR |
| Over the free space | — | EUR |
| 80% eindheffing due | — | EUR |
| Headroom left | — | EUR |
| First bracket cap | — | EUR |
| Declare and pay by | — | |
| Days left to designate | — | days |
This page is the working piece. The full pack has everything below.
Prices the eindheffing on your 2026 werkkostenregeling overrun while 31 December can still fix it
A self-employed Dutch tax advisor averages 145 euro an hour in 2026 and most charge between 80 and 180 euro an hour (Knab zzp rate survey 2026); a year-end WKR review is two to three of those hours.
Buy the full version — $60It prices your werkkostenregeling position for 2026 from six inputs. It returns eight figures: the free space from both brackets, the designated total, the amount over the line, the 80 percent eindheffing in euro, the headroom left, the first-bracket cap, the filing deadline, and the days left before 2026-12-31.
Dutch payroll administrators, in-house bookkeepers and HR leads at companies that run their own loonaangifte and designate perks such as the staff party, Christmas hampers, home-office allowances or gross bonuses to the free space. It is built for the people who must sign off the December payroll run, not for tax specialists.
Because the first-bracket percentage changed. A general assistant will often quote 2.16 percent, which is the rate from 1 January 2027, and price a 2026 wage bill with it. On a 1250000 euro wage bill that inflates the free space by 640 euro and hides part of the overrun. This tool holds 2.00 percent for 2026 and 2.16 percent for 2027 as separate years.
Every calculation is free, with no key, no watermark and no run limit: the free space, the excess, the 80 percent levy, the first-bracket cap and the countdown. The 60 dollar key adds ownership and repetition: a CSV ledger of your runs for the payroll file, and alarms for the designation cut-off and the filing deadline.
A self-employed Dutch tax advisor averages 145 euro an hour in 2026, with most charging between 80 and 180 euro an hour. A year-end WKR review is two to three of those hours. The extension prices the same position in one screen and is free for the calculation itself.
One question, answered by the person who built it. Your email only if you want the answer sent.