TRADITIONAL TSP ELIGIBLE CONTRIBUTION WORKSHEET: 

BASIC PAY, INCENTIVE PAY AND SPECIAL PAY

Traditional TSP is deducted after a number of other deductions, so you must consider those other deductions to ensure 

you have sufficient pay for your traditional TSP elections. If your election exceeds available pay, no contribution will 

be made.

Part A Eligible Pay Earned. First compute the dollar amount of pay you earn that is eligible for contribution 

to TSP.

Add:

Basic Pay ________

Incentive Pays ________

Special Pays ________

Part A Total Pay Eligible ________

Note: Eligible incentive and special pays are listed in the Department of Defense Financial Management Regulation, 

Volume 7A, Ch. 51, Figure 51-1 at

http://comptroller.defense.gov/Portals/45/documents/fmr/current/07a/07a_51.pdf

Part B Mandatory Deductions. Next compute the dollar amount of all deductions from your pay.

 Add: Forfeitures ________

Montgomery G.I. Bill ________

Social Security and

Medicare Tax ________

Armed Forces Retirement Home 

Deduction ________

Federal Income Tax Withholding ________

Servicemembers Group Life

Insurance (SGLI) ________

Family SGLI ________

State Income Tax Withholding ________

Debts ________

Garnishments ________

Alimony ________

Child Support ________
Allotments ________

Reimbursements to Individuals

and Agencies ________

Bankruptcy Payments ________

TSP Loans ________

Traditional and Roth TSP Catch-up ________

IRS Tax Levies ________

Fines ________

Part B Total Deductions: ________

Part C Maximum amount eligible for contribution to Traditional TSP. Next compute the maximum dollar amount 

of pay that is eligible for contribution to Traditional TSP, by taking the total eligible pay computed in Part A and 

deducting the total deductions computed in Part B.

Part A Total eligible pay ( )

Part B Total deductions ( )

Part C Maximum amount eligible for contribution to Traditional TSP: (_______ )

Part D Calculate Planned Dollar Amount for Traditional Contribution: Next you must take your planned 

traditional percentage elections and compute the contribution dollar amount that would result from those 

elections. This is needed so you can compare the amount eligible and the amount that would be contributed to 

make sure the results are positive, which would indicate that you have sufficient eligible pay for those elections. 

If the result of the comparison is negative, that means there is insufficient net pay for those elections and you 

must reduce the elections. Then you can perform the calculation below again with the new elections and find if 

you have sufficient net pay for them.

 Dollar Amount

________________ x __________ = ($ ) 

percent basic pay basic

elected for traditional pay

_________________ x __________ = ($ ) 

percent incentive pay incentive

elected for traditional pay

_________________ x __________ = ($ ) 

percent special pay special

elected for traditional pay

Part D Total amount traditional regular contribution planned (above

results) added together: ($_______ )

Part E Compare amount eligible to amount planned: 
 Maximum amount eligible for traditional contribution ($ )

(computed in Part C)

 Subtract the total amount traditional regular contribution planned ($ )

(computed in Part D)

Part E Result

($________)

Part F Internal Revenue Code (IRC) Maximums. If Part E is positive, you have one more step:

Make sure that your contribution will not exceed the annual IRC maximum. See the IRC maximum contribution charts 

at https://www.tsp.gov/planparticipation/eligibility/contributionLimits.shtml