Get your taxes done using TurboTax

TurboTax uses the Deduction Worksheet for the Self-Employed from IRS Pub 560 (called the Keogh, SEP and SIMPLE Contribution Worksheet in TurboTax) to calculate the maximum permissible contribution.  The portion of the deductible amount in excess of the employee regular and catch-up elective deferrals would be the employer contribution.

https://www.irs.gov/publications/p560#en_US_2022_publink10009065