I've already submitted my US tax return and received my refund for the 2019 tax year. However I just learned that the IRA contribution deadline was pushed back along with the tax deadline.
Due to some confusion, I didn't make any SIMPLE IRA contribution for 2019, but now would like to get one in before the new deadline.
Will my contribution mean that I have paid too much in taxes for 2019 and will get an extra refund next year? Or should I submit an amended 2019 return after the IRA contribution? What is the best way of going about this?
UPDATE: Looks like the SIMPLE IRA deadline for employee contributions might actually have been 12/31, not tax day. But I'm getting mixed information from the Internet.