This will tell you what you need to know about 401K hardship withdrawals:
https://ttlc.intuit.com/replies/3302066
To calculate the percentage for adjusted gross income, multiply the adjusted gross income by 10% or .1 (the decimal for 10%). You can locate your adjusted gross income:
- On IRS 1040 - line 37,
- On IRS 1040A - line 21,
- On IRS 1040EZ - line 4.