Integrations
Läs på svenska →How to connect Fortnox to Shopify (2026 guide)
BY FARSHAD · CLEARFORM · 3 MIN READ · UPDATED 2026-08-21
In short
You connect Fortnox to Shopify in one of three ways: a ready-made connector app (fastest, monthly fee), an automation platform like Zapier or Make (flexible, pay per operation), or a custom API integration (full control, higher upfront cost). Which is right depends on order volume and how clean you need your bookkeeping.
Why connect them at all?
Every Shopify order that gets retyped into Fortnox costs a few minutes and a small chance of error. At 200 orders a month that's an afternoon of copy-paste — and reconciliation pain at closing. A working integration books orders, payouts, VAT, and fees automatically, so your accountant reconciles instead of re-enters.
In ClearForm's diagnoses of Swedish e-commerce businesses, manual order bookkeeping is one of the two most common bottlenecks we find — the other is unanswered follow-up email.
Option 1 — Ready-made connector apps
Connector apps in the Shopify App Store and Fortnox marketplace sync orders, refunds, and often payouts on a schedule. Setup takes under an hour and typically costs a few hundred kronor per month.
- Best for: standard stores with Swedish VAT and one currency
- Strengths: fast setup, vendor handles Fortnox API changes
- Watch out for: fee handling on Klarna/Stripe payouts, multi-currency edge cases, and per-order pricing tiers at higher volume
Option 2 — Zapier or Make
Both platforms have Fortnox and Shopify modules. You build the flow yourself: new order → create invoice or voucher in Fortnox, with your own rules for VAT rows, shipping, and payment fees. Expect a monthly platform fee plus per-operation costs.
- Best for: stores with custom logic — B2B rows, mixed VAT, gift cards
- Strengths: you control every field mapping; easy to extend to email, Slack, or Sheets
- Watch out for: operations add up at volume, and someone must own the flow when it errors
Option 3 — Custom API integration
Both Fortnox and Shopify have solid REST APIs. A custom integration books exactly the way your accountant wants — payout matching, fee splits, periodization — and costs nothing per order once built. It makes sense above roughly 500 orders a month, or when connector apps can't express your bookkeeping rules.
How do you choose between a connector, Zapier and a custom build?
| CONNECTOR APP | ZAPIER / MAKE | CUSTOM API | |
|---|---|---|---|
| Setup time | Under a day | A few days | 1–3 weeks |
| Monthly cost | Low, fixed | Grows with volume | Near zero |
| Flexibility | Low | Medium | Total |
| Best at | < 500 orders/mo, standard VAT | Custom rules, mid volume | High volume or complex bookkeeping |
Frequently asked questions
01Does Shopify have a built-in Fortnox integration?
No — Shopify and Fortnox don't connect natively. You need a connector app, an automation platform like Zapier or Make, or a custom integration against both APIs.
02What does a Fortnox–Shopify integration cost?
Connector apps typically run a few hundred kronor per month. Zapier/Make flows cost a platform fee plus per-operation charges. A custom integration is a one-time build — usually justified above ~500 orders a month.
03Can the integration handle Klarna and Stripe fees?
The good ones can, and it's the single most important thing to verify: payouts arrive net of fees, and if fees aren't booked separately your reconciliation won't balance.
04Who fixes it when the sync breaks?
With a connector app, the vendor. With Zapier/Make or a custom build, whoever owns the flow — which is exactly the kind of ownership ClearForm sets up and documents when we build integrations.
Get a free diagnosis of your store's bookkeeping flow
Start freeSOURCES: FORTNOX DEVELOPER DOCUMENTATION · SHOPIFY API DOCUMENTATION
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