Manglende eller feil organisasjonsnummer
Every invoice in Norway must include the seller's organisation number (organisasjonsnummer). If you have a registered company, this is your ENK or AS number from Bronnoysundregistrene. Forgetting to include it, or entering the wrong number, can cause the client's accounting system to reject the invoice.
If you do not have a company and invoice through Payout Partner, the platform automatically includes the correct organisation number on your invoices — so this is handled for you.
Feil MVA-behandling
VAT errors are among the most common and costly mistakes. The standard VAT rate in Norway is 25%, but not everyone needs to charge it. If your annual revenue is below 50,000 NOK, you are not required to register for VAT (MVA). Charging VAT when you are not registered, or failing to charge it when you should, creates problems with both your client and the tax authorities.
If you are VAT-registered, the invoice must clearly show the VAT amount and your MVA number. If you are not registered, the invoice should state that VAT is not applicable. Getting this wrong leads to credit notes, reissued invoices, and delayed payments.
Fakturerer for sent
Norwegian regulations require that invoices are issued within a reasonable time after the work is performed. In practice, most businesses expect invoices within 30 days of delivery. Waiting weeks or months to send an invoice makes it harder for clients to reconcile their accounts, and you risk the payment being deprioritised.
A good habit is to invoice immediately after completing an assignment, or at the end of each month for ongoing work. Most invoicing tools, including Payout Partner, let you create and send invoices in minutes.
Bruker ikke EHF når det kreves
EHF (Elektronisk Handelsformat) is the standard for electronic invoicing in Norway. All public sector organisations and many large private companies require invoices in EHF format. Sending a PDF invoice to a client that requires EHF means your invoice will be rejected and you will need to resubmit.
Before invoicing a new client, check whether they require EHF. Payout Partner supports EHF invoicing automatically, so if your client needs it, the platform handles the formatting and delivery through the PEPPOL network.
Manglende eller uklare betalingsbetingelser
Every invoice should specify when payment is due. The most common payment terms in Norway are 14 or 30 days. If you do not include a due date, the client may not know when to pay, and you have less legal standing if you need to follow up on a late payment.
Be specific: include the exact due date, not just the number of days. Also include your bank account number, any KID number if applicable, and clear instructions for how the client should pay. The easier you make it to pay, the faster you get paid.