Key dates for business owners 2026.

The business calendar is unforgiving: Skatteverket sends no invoices, and Bolagsverket sends no reminders in time. Here's the rhythm you need to keep track of — and why our clients don't have to keep it in their heads.

Every month

Every quarter

• Quarterly VAT — filed on the 12th of the second month after the quarter (Q1 → 12 May, Q2 → 12 August, Q3 → 12 November, Q4 → 12 February).
• EC Sales List (periodisk sammanställning) — if you sell to businesses within the EU.

The year's key milestones

• January — income statements (kontrolluppgifter) and reconciliation of the previous year.
• March — the common holiday-year changeover (1 April–31 March): holiday days are reconciled.
• 4 May — personal tax return, including NE-bilagan (the sole trader's tax return annex) for sole traders (enskild firma) and K10 (the owner's dividend form) for closely held company owners.
• June — annual general meeting for a limited company (AB) with a calendar financial year (must be held within six months of the end of the financial year).
• July — the annual report must reach Bolagsverket no later than one month after the meeting — in practice by 31 July at the latest for calendar-year companies.
• December — calculating next year's possible dividend under the 3:12 rules, the tax allocation reserve and investments.

If your AB has a non-calendar financial year, the year-end accounts chain shifts — the tax return deadline depends on when your year ends.

What does a missed deadline cost?

Avoid missed deadlines and unexpected fees — let us take responsibility for the whole chain

As a SeClaro client, every date in the calendar is tracked: VAT, AGI, year-end accounts, K10 and reports for your limited company or sole trader business. You get clear reminders when we need something from you, in good time and without stress.

Want calm, structured day-to-day finances? Book a free call and we'll take over the calendar.