Associate Health Minister David Seymour believes the Government can justify spending more on cancer medication.

Finance Minister Nicola Willis has vowed they will deliver on spending $280 million on 13 new drugs - an election campaign promise they weren't able to deliver in the Budget.

She told TVNZ's Q&A that an announcement on the drugs is coming very soon.

But Mr Seymour says they have to figure out how to spend more while saving across the rest of the system.

"That's going to be a conversation, I suspect over the next few weeks, around - how do you actually make good on a promise to those people within the confronting financial circumstances?"

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