In 2018, the RMD and SS, etc will generate a large tax amount due. I really have little or no deductions (new tax reform).
Is it true that estimated taxes for 2018 need only be 100% of what I owe for 2017? I ask because I had a lot of deductions (stock sale, charity, medical) so I owe very little in 2017.
Pretending I owe $20k in taxes for 2018, but paid $300 taxes in 2017, can 2018 estimated taxes be only $300 and there is no underpayment?