When are travel costs deductible as medical costs? How are medical travel costs calculated?

What are four major categories of deductible taxes for individual returns?

If the donation is greater than $250 at any one time, what kind of written acknowledgment must the taxpayer obtain from the recipient organization?

For 2021, describe the treatment that taxpayers can elect to take for the amount of either (1) state and local income taxes or (2) state and local general sales taxes paid during the tax year.

What is qualified residence interest? Are there any limits to the deductibility of qualified residence interest?