Maximum Refund Guarantee

If you discover an H&R Block error on your return that entitles you to a larger refund (or smaller tax liability), we'll refund the tax prep fee for that return.

Disclaimer:

If you discover an H&R Block error on your return that entitles you to a larger refund (or smaller tax liability), we'll refund the tax prep fee for that return and file and amended return at no additional charge. Refund claims must be made during the calendar year in which the return was prepared.