To not know how this works?

[Soitis83]

So my partner has 2.5k of credit card debt. We can manageably pay it off each month, however, interest on it is another 100 pound a month. I've asked him if he can somehow change it so there is no interest and he said no as it's taking too long to pay it off. Admittedly he knows more about this stuff than me but I can't help but think there must be a way he can do this?

Balance transfer to a 0% credit card

Really? He knows much more about it? Suggest he changes to 0% credit card transfer and you pay it off before the deal ends. Make sure you see him destroy the card in front of you and check statements to ensure he isn’t continuing to spend.

The only reason this wouldn't be possible is if he's got late payments/ a bad credit rating so wouldn't be able to secure a 0% card. (Don't take out a card in your name on his behalf if that's the case!)

Why is his debt your worry?

I did a lot of credit card tarting when I got my house and needed furniture etc. Ended up never paying a penny interest, and didn't have to wait to save up for anything. Definitely switch to 0% interest card.

You research 0% balance transfer. Give him the info. Expected a change and if nothing happens rethink.

If he was such a financial whizz he wouldn't have run up debt on a high interest credit card that HE can't afford to repay.
Why are you repaying it?
Google interest free credit cards - or get him to, transfer the balance and work out how quickly HE can pay it down.
If he can't transfer because he has a low credit rating, be very careful about taking on shared finance and responsibilities.

We can manageably pay.

He can pay. Don’t get sucked into this.

He clearly doesn't know. Unless he can't get accepted for one if he has bad credit, he should be able to move to a 0% balance transfer card