Your Curve card is a Mastercard® debit card and can be used anywhere Mastercard® is accepted, subject to our Fair Use Policy.
However, you may be charged a fee for this by Curve when using a credit card as the underlying payment card. See ‘Will I be charged a fee for Curve Fronted transactions?’
If you're planning to make payments to government agencies such as HMRC you should be aware of the rules and restrictions they may have in place. You can find further information around their accepted payment methods on their websites.
“The Curve card and E-money is issued by Curve OS Limited (company No. 09523903) authorised in the UK by the Financial Conduct Authority to issue electronic money (firm reference number 900926). Mastercard® is a registered trademark of Mastercard International Incorporated."