Kfz Calculator: Car Tax & SF
AS AESTHETICS Auto & Vehicles Contains ads
German no-claims class, claim impact, car tax and the 30 Nov. switching date.
- Price
- Free
- No in-app purchases
- Updated
- Nov 10
- 2026 · v1.0.1
Screenshots
About Kfz Calculator: Car Tax & SF
The 30 November cut-off is approaching: if you want to switch your German car insurer for the new year, your cancellation has to reach the insurer by then. Kfz Calculator helps you make sense of the numbers and not miss the deadline. Everything runs on your device, no account needed.
What you can work out with it
SF class: enter your claim-free years and see the class and rate for liability and comprehensive cover. The whole table from SF S to SF 35 is there to look things up, and a transfer calculator shows up to which class you can take over a parent's or partner's SF class.
Downgrade: choose your class, the number of claims and your annual premium. The app shows the class after the claim and the extra cost year by year, including a chart.
Report it or pay yourself: set the damage against the extra premium from the downgrade, optionally with a deductible. You get a clear assessment and the damage above which reporting is cheaper.
Car tax: enter engine size, CO2 value and first registration, done. The calculation follows the German Motor Vehicle Tax Act with the tiered CO2 rates from 2021 and rounds down to full euros like the law. For fully electric cars the app shows how long the exemption runs (at most until 31.12.2035 under the 2026 law) and what is due afterwards.
Type class: see where your three type classes sit on the scale and read how they are worked out, who sets them and why a change can entitle you to cancel.
Switch date: countdown to the deadline, local notification reminders, a five-step checklist, notes on the special right to cancel and a cancellation letter you can share as PDF or text. The letter itself is in German because it goes to a German insurer.
Good to know
All results are non-binding estimates based on guideline values. There is no official SF table: every insurer sets its own rates, so you can enter your own percentages. The app does not compare tariffs and does not recommend an insurer.
Not affiliated with insurers or authorities. Official sources: Motor Vehicle Tax Act (gesetze-im-internet.de/kraftstg), customs (zoll.de), Federal Ministry of Finance (bundesfinanzministerium.de), GDV (gdv.de), Insurance Contract Act (gesetze-im-internet.de/vvg_2008).
Privacy
No account, no usage analytics. Inputs, saved results and your cancellation letter stay on the device. If the app shows a recommendation card it sends an anonymous request without identifiers. The interface is available in German and English.
What you can work out with it
SF class: enter your claim-free years and see the class and rate for liability and comprehensive cover. The whole table from SF S to SF 35 is there to look things up, and a transfer calculator shows up to which class you can take over a parent's or partner's SF class.
Downgrade: choose your class, the number of claims and your annual premium. The app shows the class after the claim and the extra cost year by year, including a chart.
Report it or pay yourself: set the damage against the extra premium from the downgrade, optionally with a deductible. You get a clear assessment and the damage above which reporting is cheaper.
Car tax: enter engine size, CO2 value and first registration, done. The calculation follows the German Motor Vehicle Tax Act with the tiered CO2 rates from 2021 and rounds down to full euros like the law. For fully electric cars the app shows how long the exemption runs (at most until 31.12.2035 under the 2026 law) and what is due afterwards.
Type class: see where your three type classes sit on the scale and read how they are worked out, who sets them and why a change can entitle you to cancel.
Switch date: countdown to the deadline, local notification reminders, a five-step checklist, notes on the special right to cancel and a cancellation letter you can share as PDF or text. The letter itself is in German because it goes to a German insurer.
Good to know
All results are non-binding estimates based on guideline values. There is no official SF table: every insurer sets its own rates, so you can enter your own percentages. The app does not compare tariffs and does not recommend an insurer.
Not affiliated with insurers or authorities. Official sources: Motor Vehicle Tax Act (gesetze-im-internet.de/kraftstg), customs (zoll.de), Federal Ministry of Finance (bundesfinanzministerium.de), GDV (gdv.de), Insurance Contract Act (gesetze-im-internet.de/vvg_2008).
Privacy
No account, no usage analytics. Inputs, saved results and your cancellation letter stay on the device. If the app shows a recommendation card it sends an anonymous request without identifiers. The interface is available in German and English.
What’s new
Version 1.0.1 · Updated November 10, 2026
Amounts are now read correctly on every phone: thousands separators and a decimal comma or point work in every field, and every field shows a number keyboard with a decimal key. On an English phone "1,250" € used to be read as 1.25 €. Dates and money follow your phone's region, dates that could be misread now use the month name, and reminders arrive at 9:00 on your phone's clock. German input works as before.