Bookkeeping for Swedish Startups
Swedish law requires every AB to keep proper books from day one. Here's what that means in practice — what to record, how long to keep it, and how to avoid the mistakes that cost founders thousands to fix.
Quick Answer
Every Swedish AB must record all transactions under Bokföringslagen. Records must be kept for 7 years. An annual report (årsredovisning) must be filed with Bolagsverket within 6 months of fiscal year end. Most founders use Fortnox as their accounting software.
What Swedish bookkeeping law actually requires
Bokföringslagen (BFL) requires every aktiebolag to maintain a complete, chronological record of all financial transactions. This is not optional and applies from the moment your company is registered — even before you have any revenue.
Concretely, this means every time money enters or leaves the company, or an obligation arises, you must record:
- What the transaction was (description)
- When it occurred (date)
- How much (amount in SEK)
- Which accounts are affected (using BAS-kontoplanen — the Swedish standard chart of accounts)
- Supporting documentation (invoice, receipt, contract)
The records must be kept in a way that allows reconstruction of your company's financial position at any point in time. A tax auditor should be able to take any transaction from your records and trace it back to a source document.
What you need to keep — and for how long
7-year period starts from end of the fiscal year in which the transaction occurred.
The annual report (årsredovisning)
Every AB must produce an annual report and file it with Bolagsverket within 6 months of the end of the fiscal year. For a company on a calendar year, this means by 30 June.
The årsredovisning must contain:
- Balansräkning (balance sheet) — assets, liabilities, and equity at year end
- Resultaträkning (income statement) — revenues and expenses for the year
- Tilläggsupplysningar/noter (notes) — explanatory disclosures required by law
- Förvaltningsberättelse (directors' report) — a narrative overview of the business year
Smaller companies (under 3 employees, balance sheet total under 1.5M SEK, and annual turnover under 3M SEK) qualify as "mikroföretag" and can use a significantly simplified format under K1 regulations.
Missing the Bolagsverket filing deadline results in late filing fees and, if persistent, can lead to the company being struck off the register.
Accounting software: what founders actually use
Fortnox
Industry standardThe dominant accounting platform in Sweden. Used by most accountants and bookkeepers. Handles invoicing, payroll, moms reporting, and year-end. If you plan to hire an accountant, starting in Fortnox saves migration effort later. ~350–700 SEK/month depending on modules.
Visma eEkonomi
Strong alternativeComparable to Fortnox in features. Popular with companies that use other Visma products. Slightly lower cost at small scale. ~200–500 SEK/month.
Bokio
For simple early-stageA simpler, cheaper tool aimed at founders doing their own books. Good for companies with under 20 transactions/month. Limited when complexity grows. Free tier available, paid from ~99 SEK/month.
Your monthly bookkeeping checklist
Set a recurring time — ideally the first week of each month — to handle the previous month's books:
- Record all sales invoices issued
- Record all purchase invoices and receipts received
- Reconcile your bank account against your accounting records
- Check that all transactions have supporting documentation
- Submit moms declaration if you are on a monthly schedule
The most expensive bookkeeping mistakes
✗ Doing nothing for months, then trying to reconstruct
Catching up on 6 months of transactions from memory is expensive, time-consuming, and unreliable. Swedish accountants charge significantly more for reconstruction work than for keeping books current. Even 2 hours a month from day one is vastly cheaper than a cleanup job.
✗ Using personal bank accounts for company transactions
This is both illegal and an accounting nightmare. Keep company money in the company account, always. Every private payment for a business expense must be formally reimbursed with a documented expense claim.
✗ Missing the årsredovisning deadline
Bolagsverket charges 5,000 SEK per late filing and can initiate compulsory winding up if the report remains unfiled for too long. This happens more often than you would expect.
✗ Not reconciling the bank account
Your accounting records and bank balance must match. Discrepancies that aren't investigated and resolved accumulate into major problems that are costly to untangle during an audit or annual closure.
Frequently asked questions
What is the Swedish law on bookkeeping?
Bookkeeping in Sweden is governed by Bokföringslagen (BFL, SFS 1999:1078). It requires all companies to record every business transaction chronologically, in a way that allows the financial position to be verified at any time. The law applies to all aktiebolag (AB) from the moment of registration, regardless of activity or turnover.
How long do I need to keep accounting records in Sweden?
Swedish law requires you to keep all accounting records for 7 years. This includes invoices (both sent and received), receipts, bank statements, contracts, payroll records, and annual reports. The 7-year period starts from the end of the fiscal year in which the transaction occurred.
Does an AB need an annual report (årsredovisning)?
Yes. All aktiebolag must produce an annual report (årsredovisning) within 6 months of the end of the fiscal year, and file it with Bolagsverket. The annual report includes a balance sheet, income statement, and notes. Smaller companies (under 3 employees, balance sheet under 1.5M SEK, and turnover under 3M SEK) can use a simplified format.
What accounting software do Swedish startups use?
Fortnox is the most widely used accounting software in Sweden, popular with SMEs and accountants alike. Visma eEkonomi is the main alternative. Bokio is popular with very early-stage founders who want to do simple bookkeeping themselves. Most accounting firms work in Fortnox — if you want a professional accountant, starting with Fortnox makes collaboration seamless.
Can I do my own bookkeeping in Sweden?
Yes, you can legally do your own bookkeeping. However, for an AB there are strict requirements around the chart of accounts (BAS-kontoplanen), annual reports, and tax reconciliation that most founders get wrong when doing it alone. Most growing companies hand bookkeeping to a professional by the time they have more than 20-30 transactions per month.
What is the Swedish fiscal year?
The Swedish fiscal year is typically the calendar year (January–December), but companies can choose a broken fiscal year: May–April, July–June, or September–August. The choice is fixed in the bolagsordning and cannot be changed frequently. Calendar year is simplest for alignment with tax filings.
Behind on your books? Let us sort it.
Our accounting team handles monthly bookkeeping, moms reporting, payroll, and annual reports for companies across Sweden.