- For 2017, you can contribute up to $18,000 in pre-tax earnings to a 401(k) plan, plus an additional $6,000 if you're 50 or older.
You also can contribute up to 25% of your net self-employment income—up to a total of $54,000 for 2017—into a retirement plan like a Simplified Employee Pension plan, or SEP-IRA.
Here's info on how to enter self-employed retirement contributions:
https://ttlc.intuit.com/replies/6495893
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