Pausing your mortgage payments has nothing to do with your qualifying mortgage interest that you pay. If you pay interest in 2020 you can take the interest as an itemized deduction if you itemize. Whether there is a benefit for you to pay the full amount in 2020 or wait until 2021depends on your filling status, income, other deductions, ETC. In other words no one can tell you if it is beneficial without your complete tax info.
