I owe IRS around 20k tax in 2017. The money for tax payment is not ready now. I want to request 6 month extension for 2017 tax. I know I still receive penalty if I cannot pay off the tax by April 17 even though my extension will be granted. So I want to pay IRS multiple times whenever I have some money available.
From above web page, it looks like there is limit for the number of payments to IRS. Most are only 2. I don't know why this limit exists????
I want to pay whenever I have a portion of money owed to pay to reduce further interest/penalty. Am I limited to only pay IRS TWICE before I can pay off all the tax I owe?
I wasn't aware there was a payment limit, seems counter productive for them to make it harder for you to give them money!
You can always print out a 1040V payment voucher for 2017 and send in payment by check.
I don't think that link you posted is referring to payments plans.
Check this one out. It's got answers to questions on payment plans and mentions monthly payments down in the What can I change with my payment plan online (not paid through a direct debit)? section.