Your Estonian accounting, driven by your code
Issue invoices (VAT/OSS rate automatic), push expenses, pull KMD/VD/OSS declarations and the income statement. Accountant included, the system is yours: one package, one API.
curl -X POST https://corpenza.com/api/external/accounting/invoices \
-H "Authorization: Bearer $API_KEY" \
-H "Content-Type: application/json" \
-d '{
"clientName": "Berlin GmbH",
"clientCountry": "DE",
"clientVatNumber": "DE123456789",
"items": [{ "description": "SaaS", "unitPrice": 500 }]
}'
# → 201 taxRate: 0 (Intra-EU B2B — Reverse Charge)
# invoiceNumber: "CRP-202606-0042"Calculate your monthly cost
The €100 base includes 10 invoices per month — from the panel or the API, one shared pool. Above that, graduated pricing applies.
Estimated monthly
€358.50
/ mo
≈ €2.39 effective per invoice
Expense creation and all read endpoints are free. Current pricing is shown in the panel.
Don't think about the rate
24%
Domestic (EE)
0%
Intra-EU B2B
Reverse charge
19%*
Intra-EU B2C (OSS)
Buyer-country rate
0%
Outside EU
Export exemption
Live in 3 steps
Switch to the package
One click from your company's API tab — it replaces your current accounting package.
Create a key
Pick its scopes; the key is bound to your company only and shown once.
Issue your first invoice
One POST — the API handles the VAT rate, reverse charge and OSS; numbering stays gapless.
Everything out of the box
Automatic VAT/OSS
Domestic, intra-EU B2B reverse charge, OSS B2C and export — rate and legal note automatic, VIES-validated.
e-MTA declarations
KMD (incl. INF A/B annexes), VD and OSS XML — against the official XSD, validated with real samples.
Income statement
Scheme 1 format, any month range, JSON or PDF.
Gapless numbering
Panel and API share one sequence; no deletion, only cancellation — audit-ready.
Shared invoice pool
The included 10 invoices are panel + API combined — one meter wherever you issue.
Accountant included
The API is a package: it comes with legal address, annual report and your accountant.
Frequently asked
Does the API package come on top of my accounting package?+
No — it replaces it. You pay a single subscription: €100/mo base + graduated per-invoice above the included amount. The accounting service (legal address, annual report, accountant) is included.
Do invoices issued from the panel also count?+
Yes — the included 10 invoices are a shared panel + API pool. One meter, no surprises.
What if I pick the wrong VAT rate?+
With the default autoVat you don't pick it: the API derives the rate from your VAT/OSS registration and the client's country/VAT number; intra-EU B2B numbers are VIES-validated. If you're not VAT-registered, VAT-bearing invoices are rejected outright.
Does my accountant file the declarations?+
Yes. The system produces KMD/VD/OSS XML in the official format; your Corpenza accountant reviews and files them with e-MTA. You can also pull the XML yourself via the API.
Wire your accounting to code
Switch today and issue your first API invoice in 5 minutes.