For Single 75,000 AGI is the limit to get the full amount. Then it phases out over 75,000 - 99,000. 99,000 is the max.
There is a 5% phaseout if you are over certain AGI. Here is a IRS pdf chart
https://www.irs.gov/pub/irs-utl/how_do_I_calculate_my_eip.pdf
