Im sure we are close, Lis. I might be exaggerating a bit with $150. If someone missed something small and easy, I'll go 80-100. If there is more work, I'll do $150. I have a client who forgot a 1099-C (principal home) and I will charge accordingly there.  If we are off on those numbers, yeah....do yourself a favor and increase. 1040-X's are confusing as hell to the general public.