I came to this page thinking my check was wrong, but I thought the checks were based upon taxable income. They are based on adjusted gross income which is your income before any deductions. That is line 8b on your return. My taxable income was $148k, but my agi was $175k which is 25k over the 150k limit. The amount of stimulus is reduced by $5 for every $100 over 150k so my stimulus was reduced by $1250. Unfortunately my check is correct and I should have waited to file my tax return so they could have used my 2018 return. I believe there might be a chance to get some of this back when I file in 2021 if my income is less due to being off work from covid19.
