I just filed my taxes and I set up so I thought a payment plain of a 100.00 a month until paid off. When I printed out my taxes it showed a payment voucher for 987.00?

I would call the IRS and speak to a real person, I had to set up payments last year and they were very nice. I was so relieved that I could pay within 140 days (I think that's what it was) and much less in penalties in the long run.