Contasimple vs Fortnox: Complete Comparison (2026)
An in-depth comparison of Contasimple and Fortnox to help you choose the right tool for your business.
Last updated: November 2026
Contasimple
5.5/10
Cloud invoicing, accounting and tax-filing software for Spanish freelancers (autónomos) and microbusinesses, with VeriFactu-ready invoicing and official tax models.
Fortnox
6.5/10
Swedish cloud accounting platform covering bookkeeping, invoicing, payroll, supplier invoice approval and reporting for small and mid-sized Swedish businesses and accounting firms.
Feature-by-Feature Comparison
| Feature | | |
|---|---|---|
| Scores | ||
| Overall Rating | 5.5/10 | 6.5/10 |
| Scalability | 3/10 | 6/10 |
| Analytics | 4/10 | 5/10 |
| Compliance | 8/10 | 7/10 |
| Integration | 3/10 | 8/10 |
| Security | 5/10 | 6/10 |
| Support | 4/10 | 7/10 |
| Cost | 8/10 | 6/10 |
| Customization | 4/10 | 5/10 |
| Ease of Use | 7/10 | 7/10 |
| Pricing | ||
| Free plan | Yes | No |
| Cheapest paid plan | €13/mo Profesional | SEK 238/mo Mini |
| Estimated cost for 10 users | Free Básico | SEK 238/mo Mini |
| Features | ||
| Payroll | ||
| Accountant Access | ||
| Financial Reporting | ||
| General Ledger | ||
| Invoicing | ||
| Accounts Payable | Not listed | |
| Bank Reconciliation | Not listed | |
| Corporate Cards | Not listed | |
| Expense Management | Not listed | |
| Tax Compliance | Not listed | |
Contasimple vs Fortnox cost by team size
| Team size | Contasimple | Fortnox |
|---|---|---|
| 1 user | FreeBásico | SEK 238/moMini |
| 5 users | FreeBásico | SEK 238/moMini |
| 10 users | FreeBásico | SEK 238/moMini |
| 25 users | FreeBásico | SEK 238/moMini |
| 50 users | FreeBásico | SEK 238/moMini |
The plan that fits each team size, billed monthly, before add-ons and usage charges. Each cost opens that tool's pricing calculator for the team size.
Which One Should You Choose?
Why choose Contasimple
- Has a free plan (Fortnox does not)
- Higher Cost score (8/10 vs 6/10)
- Higher Compliance score (8/10 vs 7/10)
Why choose Fortnox
- Higher Integration score (8/10 vs 3/10)
- Higher Scalability score (6/10 vs 3/10)
- Better fit for accountants and bookkeepers (9/10 vs 5/10)
- Better fit for small business (9/10 vs 7/10)
- Includes Payroll, which Contasimple lacks
Pros & Cons
Contasimple
Pros
- Covers Spanish tax models such as 303, 130, 349 and 390 from inside the app, which suits autónomos who file their own returns.
- Invoicing is VeriFactu-ready, and paid plans add FACe e-invoicing for public-sector customers.
- Free-forever plan, with paid plans starting at about 11 euros a month on annual billing.
- Capterra reviewers rate ease of use as its strongest point (4.0 out of 5).
Cons
- Capterra reviewers rate support and value for money weakly, and Trustpilot reviews mention slow support.
- The free plan only allows 12 documents a year.
- No payroll, CRM or project features, and very few third-party integrations.
- Built for Spain only, so it does not suit businesses in other countries.
- Reviewers describe the interface as dated.
Fortnox
Pros
- More than 500 integrations, and one 189 kr licence covers all of them.
- A single platform covers bookkeeping, invoicing, payroll, supplier invoice approval, payments and a company card, which suits Swedish SMEs.
- Accounting firms get a dedicated bureau package for working in their clients' books.
- New companies get six months free, and every new subscription has a 30-day open purchase period.
- Trustpilot and Shopify app reviewers frequently praise customer service and sync reliability.
Cons
- Usage fees for invoices, paid employees and interpretations, plus an Access fee that scales with activity, make total cost hard to predict.
- Three-month agreements cost 15 percent more than the 12-month list prices.
- The product is Swedish-focused, and users have asked for an English interface.
- Some users call the reporting tools dated and say neobank integrations such as Revolut are missing.
Not sold on either?
Frequently Asked Questions
Fortnox scores higher on our Finance Software criteria: 6.5/10 against 5.5/10 for Contasimple. The largest gap is in Integration: 3/10 for Contasimple and 8/10 for Fortnox.
Contasimple has a free plan; Fortnox does not list one.
Fortnox is the better fit for accountants and bookkeepers: we rate it 9/10 for them, against 5/10 for Contasimple.
Fortnox has Payroll, which Contasimple lacks.
