4th Qtr estimates paid in February

[Hoosier]

Just found out client paid his fourth quarter 2015 federal and state estimated tax payments earlier today (2/20/16). The payments are obviously late. Will IRS and Indiana still accept the vouchers and payments and apply to the taxpayer accounts? Or will the payments be sent back to the client?

[Bonnie]

Pretty sure they will accept the payments, can't imagine them ever sending any payment back

[taxea]

They won't send back the money but there may be a late pmt penalty attached.