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Effective interest from 21.66%. Nominal rate varies between cards.

How does a credit card work?

Last updated: 20 May 2026

Short answer. When you pay by credit card you borrow from the issuer and collect your purchases on one monthly invoice. Pay the full amount by the due date and purchases are interest free for up to 50 days (Morrow Bank). Pay only the minimum and the effective rate, from 21.66% upwards, applies to the rest. Cash withdrawals and spending abroad may carry their own fees.

The credit limit is the most you can spend, set individually after a credit assessment. In our selection limits go up to NOK 200,000 (TF Bank Mastercard). Your actual limit may be lower than the maximum.

The interest-free period applies to ordinary purchases as long as the previous invoice is paid. Instabank has no interest-free period, so interest there accrues from day one. Cash withdrawals usually carry interest from the day of withdrawal even when purchases are otherwise interest free.

Each month you get an invoice with a minimum amount and a due date. The smartest move is to pay it in full, ideally by direct debit or eInvoice, so you never pay interest. Then you keep the benefits, such as rewards and insurance, without the cost.

Relevant cards

Compare credit cards
Morrow Bank
Morrow Bank credit card
Best for online shopping
Eff. rate
28.77%
Credit limit
NOK 100,000
Interest free
50 days
4% reward at Komplett.no, 2% on online shopping, 1% on everything else
50 days interest-free credit, the longest in our line-up
Purchase protection up to NOK 25,000 and ID theft insurance included
90-day travel insurance, the longest in Norway

Effective rate 28.77%, NOK 12,000 over 12 months. Cost NOK 1,726, total NOK 13,726.

Instabank
Instabank credit card
Lowest rate
Eff. rate
21.66%
Credit limit
NOK 100,000
Interest free
0 days
17.9% nominal rate, one of the lowest in Norway
5% monthly discount in rotating categories
Fixed 5% green discount on public transport and EV charging
Transfer credit straight to your bank account

Effective rate 21.66%, NOK 45,000 over 12 months. Cost NOK 4,963, total NOK 49,963.

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