If your employees have enough wages, they can put their entire paycheck toward their retirement contribution. If they don’t, you can create a retirement paycheck-only if they’ll contribute to retirement with personal money to cover the full retirement contribution. 
Step 2. Set up a retirement offset deduction item
You only have to do this step if your employee doesn’t have enough wage and will use personal money to cover the full retirement contribution. 
- Go to Lists, then Payroll Item List.
 - Select Payroll Item â–Ľ dropdown, then New.
 - Select Custom Setup, then Next.
 - Select Deduction, then Next.
 - Enter the name of the deduction item such as 401(k) Retirement Offset.
 - In the Agency for employee-paid liability window, select the account you want to use to track the item.
 - Select Next.
 - Select None from the Tax tracking type â–Ľ dropdown, then select Next three times.
 - Select net pay in the Gross vs. net window, then Next.
 - Select Finish.
 
Step 3. Create and run your employee’s paycheck
If an employee has enough wages to cover the full retirement contribution.
- Create and run payroll.
 - In the Enter Payroll Information window, select Open Paycheck Detail.
 - In the Earnings Item section, select the Earning item, Rate and Hours (for hourly employees). 
 - In the Other Payroll Items section, select the Retirement plan deduction item, created in Step 1.
 - Adjust Retirement Deduction item’s amount until the Net amount is $0.00
 - Select Save & Close, then Create Paychecks. 
 - Select Send Payroll Data (if applicable).
 
If your employees don't have enough wage and will contribute to retirement with personal money, they can write a check back with the amount they want to go to the retirement plan. Then, you need to create a retirement paycheck-only.
- Create a retirement paycheck-only.
 - In the Enter Payroll Information window, select Open Paycheck Detail.
 - Clear all the items in the Earnings section. 
 - In the Other Payroll Items section, select the Retirement plan deduction item, created in Step 1, and the amount they’ll contribute.
 - On the next line, in the Other Payroll Items section, select the Retirement OFFSET Item, created in Step 2, then enter retirement amount as POSITIVE in the Rate column.
NOTE: You’ll be prompted with the message "Deductions are normally entered as a negative number, are you sure you want to have a positive number?" Select Yes. - Select Save & Close, then Create Paychecks. 
 - Select Send Payroll Data (if applicable).