SEP IRA

Hello:

 

This year a majority of my income is from being an independent contractor.  I paid an assistant around 8K for help in 2020.  I have made $171K per my 1099-NEC.  plus around 46K per W-2 forms.  I also have dividends and interest .(I have no capital gains this year)   I know the deadline has been pushed back to May 17th for a contribution to a SEP-IRA.  How much can I contribute to my SEP IRA is 2020?