Money Some important deadlines for your finances have changed in 2020. Here’s what you need to know. August 30, 2020Russ Wiles, Arizona RepublicComments Off on Some important deadlines for your finances have changed in 2020. Here’s what you need to know. In most years, only a few key dates stand out for income-tax planning, and most of them are familiar to taxpayers. COVID-19 has changed that in 2020.