a3innuva vs Fortnox: Complete Comparison (2026)
An in-depth comparison of a3innuva and Fortnox to help you choose the right tool for your business.
Last updated: November 2026
a3innuva
5.9/10
Wolters Kluwer's cloud suite of accounting, payroll and ERP software for Spanish SMEs and the advisory firms (asesorías) that manage their books.
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 | A a3innuva | |
|---|---|---|
| Scores | ||
| Overall Rating | 5.9/10 | 6.5/10 |
| Analytics | 6/10 | 5/10 |
| Compliance | 8/10 | 7/10 |
| Cost | 6/10 | 6/10 |
| Customization | 4/10 | 5/10 |
| Ease of Use | 6/10 | 7/10 |
| Integration | 5/10 | 8/10 |
| Scalability | 6/10 | 6/10 |
| Security | 6/10 | 6/10 |
| Support | 4/10 | 7/10 |
| Pricing | ||
| Free plan | No | No |
| Cheapest paid plan | €26/mo a3innuva Contabilidad Pymes (base) | SEK 238/mo Mini |
| Estimated cost for 10 users | €26/mo a3innuva Contabilidad Pymes (base) | SEK 238/mo Mini |
| Features | ||
| Accountant Access | ||
| Financial Reporting | ||
| General Ledger | ||
| Invoicing | ||
| Payroll | ||
| Accounts Payable | Not listed | |
| Audit Trail | Not listed | |
| Bank Reconciliation | Not listed | |
| Corporate Cards | Not listed | |
| Expense Management | Not listed | |
| Tax Compliance | Not listed | |
a3innuva vs Fortnox cost by team size
| Team size | a3innuva | Fortnox |
|---|---|---|
| 1 user | €26/moa3innuva Contabilidad Pymes (base) | SEK 238/moMini |
| 5 users | €26/moa3innuva Contabilidad Pymes (base) | SEK 238/moMini |
| 10 users | €26/moa3innuva Contabilidad Pymes (base) | SEK 238/moMini |
| 25 users | €26/moa3innuva Contabilidad Pymes (base) | SEK 238/moMini |
| 50 users | €26/moa3innuva Contabilidad Pymes (base) | 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?
AWhy choose a3innuva
- Higher Analytics score (6/10 vs 5/10)
- Higher Compliance score (8/10 vs 7/10)
Why choose Fortnox
- Higher Integration score (8/10 vs 5/10)
- Higher Support score (7/10 vs 4/10)
Pros & Cons
Aa3innuva
Pros
- The advisory version files the main Spanish tax forms and closes the year automatically, which cuts repetitive work for asesorías.
- Client and advisor work in the same cloud data, with read or edit permissions per client and tracked changes.
- Spanish regulatory changes are applied automatically through cloud updates.
- The SME entry price of 26 euros per month is low for a product from a large vendor.
Cons
- Users repeatedly complain about slow technical support, with replies taking from hours to several days.
- Users report hangs and slowness when working with large volumes of data.
- Report customisation is limited, and some third-party connections need the paid Conectia API or custom development.
- Pricing is modular and mostly by quote, so the full cost is hard to estimate in advance.
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 5.9/10 for a3innuva. The largest gap is in Integration: 5/10 for a3innuva and 8/10 for Fortnox.
No, neither a3innuva nor Fortnox lists a free plan.
