Documentation

Guides, API reference and explainers for building on the Nordlet accounting API.

Guides

API keys, first calls, the full invoicing cycle, SDKs and webhooks.

Install and initialize the Nordlet client in nine languages.

Request shape, auth scopes, list queries, money, errors, idempotency, rate limits.

camt.053 statements, Stripe CSV, PSP settlement reconciliation and custom JSON feeds.

Bring a company's books over in one call — chart of accounts, partners, opening balances or full history, open invoices, fixed assets and stock.

Place-of-supply resolution, OSS/IOSS returns, SME exemption and distance-sales thresholds.

Deferred revenue, ratable, milestone and percent-complete schedules, refund liabilities, subscriptions.

Consolidation groups, full, proportional and equity methods, currency translation, eliminations.

Interactive reference for every endpoint, generated from the OpenAPI spec.

The raw machine-readable spec for tooling and code generation.

Every endpoint, grouped by module, with bearer auth pre-wired.

Country-by-country reference of corporate taxes, rates, filing forms and deadlines — with links to the underlying laws and official sources.

The headline corporate income tax rate, country by country.

The reduced or start-up rate a small company pays, and how to qualify.

What a resident shareholder pays on dividends, country by country.

The turnover at which a company must register for VAT, plus each country’s standard rate.

Cross-border comparisons: effective rates, holding structures, thresholds.

Plain-English definitions of the accounting terms used across these docs, grouped by topic.

New features, meaningful changes and fixes, by release.

The agreement between Nordlet and every business that uses the Nordlet application or API.

What personal data Nordlet collects, why, for how long, and what rights you have.

The GDPR Article 28 agreement under which Nordlet processes personal data on behalf of its customers.