Momsangivelse for Danish businesses — step by step
Momsangivelse is one of the most stressful moments in a Danish business owner's quarter. Deadline on the 1st, numbers must be correct to the øre, and mistakes cost DKK 800 plus interest. This guide walks you through momsangivelse step by step — and shows how automation turns 3 hours of anxiety into 5 minutes of review.
Step 1 — Determine your filing frequency
Your revenue determines how often you file: Over DKK 50M/year = monthly (deadline 25th), DKK 5-50M/year = quarterly (deadline 1st of the 2nd month after quarter end), Under DKK 5M/year = semi-annually (deadline 1 March and 1 September). Sitenyx MomsGate auto-detects your correct frequency from e-conomic data.
Step 2 — Understand rubrikker A, B and C
The momsangivelse has three key rubrikker: Rubrik A (EU goods and services purchases — erhvervelsesmoms). Rubrik B (sales to EU customers outside Denmark). Rubrik C (sales to non-EU countries). These must match your EU sales list and Intrastat reports. Errors here are the most common cause of SKAT inquiries.
Step 3 — Calculate salgsmoms and koebsmoms
Salgsmoms = 25% of taxable sales + erhvervelsesmoms. Koebsmoms = 25% of deductible purchases. Important: entertainment (restaurants, client gifts) is only 25% deductible (Momsloven §42 subsection 2). Company car, partial phone use — also 25%. MomsGate classifies transactions automatically and flags those needing review.
Step 4 — Validation and reverse charge
Before submitting, everything is validated: salgsmoms ≥ 0, NetAmount = Salgsmoms − Koebsmoms ±0.01 DKK, no unclassified EU transactions, erhvervelsesmoms balanced. MomsGate runs 139 validation rules automatically. Critical: reverse charge. When buying a service from an EU business, report the moms as BOTH salgsmoms AND koebsmoms. Net effect is zero but both entries are mandatory.
Step 5 — Submission and deadlines
Submit via SKAT TastSelv Erhverv or direct via the NemVirksomhed API. Miss a deadline and it's DKK 800 fee plus 0.7%/month interest. Miss two quarters and SKAT makes a 'foreløbig fastsaettelse' — an estimate that's usually higher than your actual moms. MomsGate sends automatic reminders 30/14/7/3/1 days before deadline with estimated net amount so you can plan liquidity.
Conclusion
Momsangivelse doesn't have to be stressful. With automatic classification, 139 validation rules, escalating reminders and one-click SKAT submission, you can reduce 3 hours of anxiety to 5 minutes of review. Connect your e-conomic account to Sitenyx — in 60 seconds you'll see your current moms position and next deadline.
Ofte stillede sporgsmol
What is the difference between quarterly and monthly filing?
Quarterly filing applies to businesses with revenue DKK 5-50M/year (deadline: 1st of the 2nd month after quarter end). Monthly applies above DKK 50M (deadline: 25th of following month).
What does a wrong momsangivelse cost?
DKK 800 fee for late filing, plus 0.7%/month interest on unpaid amounts. After 2 missed quarters SKAT estimates your moms — typically higher than actual.
Can MomsGate file automatically with SKAT?
Yes, if you have SKAT NemVirksomhed API enabled. Otherwise MomsGate generates a pre-filled TastSelv link you can submit with one click.
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