TSE Cash Register Reporting Assistant
Check whether your electronic cash register was reported to the tax office on time, and how long your TSE certificate remains valid (§146a AO, Germany).
Check nowThis assessment is based on the rules researched as of 2026-07-16 (§146a AO, KassenSichV). TSE certificate validity varies by manufacturer — check your TSE documentation for the exact expiry date. Not tax advice.
How it works
Clarify register type
Electronic register or open cash box.
Check reporting status
Catch-up or ongoing rule, depending on acquisition date.
Calculate TSE validity
Optional: manufacture date for an expiry estimate.
Benefits
Good to know about this tool
Checks, based on a few questions, whether your electronic register has been or needs to be reported on time, and estimates your TSE certificate's expiry.
The cash-register reporting duty came with a catch-up deadline (31 July 2025, already passed) and an ongoing 30-day rule for new registers — many businesses don't know the difference.
- Check whether an existing register still needs to be reported
- Determine the deadline for a newly acquired register
- Estimate the TSE expiry date before a gap occurs
- Report exclusively via Mein ELSTER — email or paper have no legal effect
- Order and activate a replacement TSE at least 14 days before expiry
Frequently Asked Questions
What happens if I missed the reporting deadline?
Warning: your register was in use before 1 July 2025 — the catch-up reporting deadline already ended on 31 July 2025. If you haven't reported yet, do so immediately via Mein ELSTER (fines of up to €25,000 possible).
Do I need a TSE at all?
You don't use an electronic cash register (open cash box). No TSE or reporting obligation applies under §146a AO — but you must still follow GoBD requirements for proper bookkeeping.
Is this legally binding advice?
This assessment is based on the rules researched as of 2026-07-16 (§146a AO, KassenSichV). TSE certificate validity varies by manufacturer — check your TSE documentation for the exact expiry date. Not tax advice.
The information, templates, scripts, calculations and recommendations provided are intended for educational and assistance purposes only. Always review and test any generated result before production use. IT Smart Service accepts no liability for misuse, data loss, outages, security incidents, or legal, financial or technical damages arising from incorrect or improper use. Responsibility for validation, testing and deployment decisions rests with the user.
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