My wife and I have taxes withheld via our jobs, and had to pay the underpayment penalty last year. We only recently discovered my wife not having enough withheld. We corrected this but expect it to be too late in the year for it to allow us to avoid the penalty.
We are in a position to pay the IRS extra before the end of 2019 to avoid the penalty. We can estimate how much, but how do we pay the IRS in addition to what is withheld from our paychecks? Thank you.
