We use your taxable income and Tax Profile to calculate max contribution estimates
Ruby Money's calculator uses the taxable income detected from your connected bank account, as well as the information you provide in your tax profile (estimated expense deductions, State, Filing Status, etc), to set a maximum allowable contribution into a SEP-IRA for you based on the IRS rules.
If you are a sole proprietor or a single member LLC, you can contribute a maximum of 20% of the profit (revenue minus expenses) from your business pre-tax. For folks who have high expenses in their business, this usually translates to 10-15% of revenue.