Our home is paid off and we did a home improvement loan. How do we claim that?

[DoninGA]

The cost of a home improvement to a personal residence is not reported on a tax return.  The cost of the improvement is added to the basis of the home when it is sold.

[Hal_Al]

The interest may be deductible as mortgage interest, under certain conditions. See https://wallethub.com/answers/pl/are-home-improvement-loans-tax-deductible-2140686581/

It would be best if your loan company treated it as such and issued you form 1098. But, you can still deduct the interest without a 1098.