Your customers already pay in USDC and EURC. Your books live in DATEV. Stablewerk is the bridge: on-chain payments are valued, booked, and exported as an audit-proof, GoBD-compliant batch.
Since January 2026, crypto service providers report transaction data to the German Federal Central Tax Office. The first reporting period is calendar 2026, and that data arrives in 2027. What was booked and what was reported then have to match.
The reporting duty follows an EU directive and applies across all member states, not only Germany. Implemented in Germany as the Kryptowerte-Steuertransparenzgesetz.
Transactions occurring in 2026 are captured. Providers must obtain a tax self-disclosure from customers onboarded earlier by 1 January 2027, and file with the Federal Central Tax Office by 31 July 2027.
The authority holds the data independently of your books. A traceable derivation for every entry stops being diligence and becomes the baseline.
For individuals and founders whose bank already asks where the funds came from: the free source-of-funds check reviews your crypto history entirely in your browser.
Between a wallet and proper financial accounting sits a human with a spreadsheet. Every month.
A wallet produces transaction hashes, not journal entries. No ERP on earth can read a hash, and no bank sends a statement for these payments.
Every inflow must be valued in euro at the moment it arrives, with a documented rate source. Today that means: google the rate, open Excel, hope.
The crypto spreadsheet here, the financial books there. Someone rebuilds the bridge every month, and at year-end nobody trusts it.
Where did this rate come from? Who recorded this entry, and when? Without a complete audit trail, every audit becomes a very long week.
You provide a public wallet address or a read-only exchange key. No signing rights, no private keys, no approvals.
Every transaction is valued in euro at booking time, mapped to the right account, and booked with correct VAT, in SKR03 or SKR04. Deterministic rules with cited sources, never a black box.
Your tax firm receives an EXTF batch exactly as they know it, plus a reconciliation report and, behind every entry, the complete audit trail: hash, rate source, rule, approval.
Imports directly into DATEV. No new format, no new tool for your firm to learn.
Wallet balance against book balance, every month. Differences are shown, never hidden.
Every entry carries its hash, rate source, rule version and approval. Immutable, chained, ready for any audit.
Paid in stablecoins by a business elsewhere in the EU? Add a fourth: the Zusammenfassende Meldung for that quarter, the customer's VAT ID and amount already aggregated, ready for your tax firm to file.
Stablewerk hands your tax firm an EXTF batch exactly like the ones they see every month, plus a reconciliation report and the full audit trail behind every entry. They import the file like any other, no new tool, no new process.
Or skip the monthly handoff: your tax firm can log in directly, any time, for every Mandant you grant them. The seat is free and strictly read-only, they see every booking and the full audit trail, and cannot change anything.
Stablewerk holds no keys, has no signing rights, and cannot initiate any payment. It reads and it books. Nothing more, by architecture.
Processing and storage exclusively on servers within the EU, GDPR-compliant. Your financial data never leaves Europe.
In the booking path, versioned rules with legal citations decide, never a language model. Same input, same entry, every time, traceable to the rule number.
Every entry is cryptographically chained with hash, rate source, rule version and approval. Designed as if an auditor will read it tomorrow.
Still wondering about something? hello@stablewerk.com, we reply personally.
The Founding Circle is deliberately small: a handful of companies with real stablecoin payments, and tax firms guiding their clients through it. Free during the pilot phase, founding-customer terms afterwards, a direct line instead of a ticket system.