Fortnox · Rate Limits

Fortnox Rate Limits

Fortnox rate-limits the REST API per access-token. The documented limit is 300 requests per minute per access-token, enforced as a sliding window of roughly 25 requests per 5 seconds and scoped per client-id + tenant. Because the limit is per access-token, an integration serving many Fortnox tenants gets an independent 300 requests/minute allowance for each tenant's token. Exceeding the limit returns HTTP 429 (Too Many Requests). In November 2022 Fortnox raised the limit from 4 req/s (240/min) to 5 req/s (300/min).

Fortnox Rate Limits is the machine-readable rate-limit profile for Fortnox on the APIs.io network, conforming to the API Commons Rate Limits specification.

It captures 2 rate-limit definitions, measuring requests.

The profile also includes 3 backoff/retry policies defined and response codes documented for throttled.

Tagged areas include Accounting, ERP, Rate Limiting, Quotas, and Sweden.

2 Limits Throttle: 429
AccountingERPRate LimitingQuotasSweden

Limits

REST API Requests access-token
requests · minute
300
Per access-token (per client-id + tenant). Enforced as a ~25 requests / 5s sliding window.
Sliding Window Burst access-token
requests · 5 seconds
25
Short-window burst ceiling underlying the per-minute limit.

Policies

Sliding Window
Requests are counted over a moving 5-second window; sustained rate must average within the window.
Per-Tenant Isolation
Each tenant's access-token has its own independent quota, so multi-tenant integrations scale linearly across customers.
Backoff Strategy
On HTTP 429, back off (exponential with jitter) and retry; prefer the WebSocket Topics stream over polling to stay under the limit.

Sources

Work with this as data

Every rate limit here is available over the APIs.io API and to AI agents over MCP.

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Tools for rate limits

4 MCP tools reach this
  • find_rate_limitsBrowse and filter every rate limit in the catalog.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
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Call it yourself

curl for this page
This rate limit
curl "https://apis.io/api/v1/rate-limits/fortnox-rate-limits"
All rate limits
curl "https://apis.io/api/v1/rate-limits?limit=25"

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