BillingEngine vs Fortnox: Complete Comparison (2026)
An in-depth comparison of BillingEngine and Fortnox to help you choose the right tool for your business.
Last updated: November 2026
BillingEngine
5.7/10
BillingEngine is a browser-based invoicing tool from Hamburg for freelancers and small German businesses. It creates quotes, invoices and XRechnung or ZUGFeRD e-invoices.
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 | 5.7/10 | 6.5/10 |
| Scalability | 2/10 | 6/10 |
| Analytics | 3/10 | 5/10 |
| Compliance | 7/10 | 7/10 |
| Integration | 3/10 | 8/10 |
| Security | 5/10 | 6/10 |
| Support | 8/10 | 7/10 |
| Cost | 9/10 | 6/10 |
| Customization | 3/10 | 5/10 |
| Ease of Use | 8/10 | 7/10 |
| Pricing | ||
| Free plan | Yes | No |
| Cheapest paid plan | €8/mo Basic | SEK 238/mo Mini |
| Estimated cost for 10 users | Free Free | SEK 238/mo Mini |
| Features | ||
| Accountant Access | ||
| Invoicing | ||
| Accounts Payable | Not listed | |
| Bank Reconciliation | Not listed | |
| Corporate Cards | Not listed | |
| Expense Management | Not listed | |
| Financial Reporting | Not listed | |
| General Ledger | Not listed | |
| Multi-currency | Not listed | |
| Payroll | Not listed | |
| Tax Compliance | Not listed | |
BillingEngine vs Fortnox cost by team size
| Team size | BillingEngine | Fortnox |
|---|---|---|
| 1 user | FreeFree | SEK 238/moMini |
| 5 users | €15/moPremium | SEK 238/moMini |
| 10 users | FreeFree | SEK 238/moMini |
| 25 users | FreeFree | SEK 238/moMini |
| 50 users | FreeFree | 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 BillingEngine
- Has a free plan (Fortnox does not)
- Higher Cost score (9/10 vs 6/10)
- Higher Support score (8/10 vs 7/10)
Why choose Fortnox
- Higher Integration score (8/10 vs 3/10)
- Higher Scalability score (6/10 vs 2/10)
- Better fit for enterprise (3/10 vs 1/10)
- Better fit for small business (9/10 vs 7/10)
Pros & Cons
BillingEngine
Pros
- Creates ZUGFeRD and XRechnung e-invoices on every plan, including the free one, and reviewers say public authorities accept them.
- Every account gets an inbox for incoming supplier e-invoices, with no limit.
- Paid plans start at 7.50 euros a month with a flat fee rather than per-user pricing, and annual billing saves 20 percent.
- Stopwatch time tracking turns timed tasks into invoice items in one click.
- Reviewers on OMR and Trustpilot praise fast, personal support and the simple interface.
Cons
- There is no bank connection, so bank reconciliation is not available.
- There is only one invoice design, with limited layout and branding options.
- There is no mobile app; it runs in the browser only.
- The maximum is five users, and reviewers say it is unsuitable for larger companies.
- Users have asked for automatic sending of payment reminders and delivery notes.
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 5.7/10 for BillingEngine. The largest gap is in Integration: 3/10 for BillingEngine and 8/10 for Fortnox.
BillingEngine has a free plan; Fortnox does not list one.
Fortnox is the better fit for enterprise: we rate it 3/10 for them, against 1/10 for BillingEngine.
