Pension Division Calculator
Calculate the marital share of a defined-benefit pension using the coverture fraction, its present cash value, and how monthly benefits split at retirement.
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Total years in pension plan$
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Typical range: 1% – 2.5%%
Coverture Fraction (Marital Share)
63.64%
Years Married14 yrs
Total Service Years22 yrs
Marital Monthly Benefit$1,365/mo
Spouse's Portion (50%)$682/mo
The coverture fraction = marital years ÷ total service years. This determines what portion of the pension was earned during the marriage and is subject to division.
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Advanced Analysis
Coverture Fraction · Monthly Benefit Chart · Present Value
Pension Details
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Coverture Fraction Visualization
63.6% marital share
Pre-marital: 36.4%Marital: 63.6%
Formula14 ÷ 22 years
Total Monthly Pension$2,727/mo
Marital Monthly Benefit$1,735/mo
Spouse Monthly Share$868/mo
Retiree Retains$1,859/mo
Annual to Spouse$10,413/yr
Spouse Share (50% of marital)$868/mo
Retiree Benefit$1,859/mo
Total Pension$2,727/mo
Professional Model
Multiple Pensions · Survivor Benefits · Lifetime Income Analysis
Government Pension
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Coverture: 63.6% | Total: $2,727/mo | Spouse Share: $868/mo
Teacher Pension
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Coverture: 66.7% | Total: $1,550/mo | Spouse Share: $517/mo
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Combined Pension Division Analysis
$1,384/mo to spouse
Total Monthly Pension$4,277/mo
Spouse Total (all plans)$1,384/mo
Annual to Spouse$16,613/yr
Total Nominal Payments$382,088
Present Value Today$294,352
Years of Payments23 years
How Pension Division Works in Divorce
Defined-benefit pensions (government, military, teacher, union) are among the most complex assets to divide in divorce because they don't have an obvious "balance" — they're a promise of future income. Two approaches are used:
- Deferred Distribution (QDRO/DRO): The non-employee spouse receives their share of each monthly check when the employee retires. No cash changes hands now.
- Present Value Offset: A pension actuary calculates the lump-sum present value of the spouse's share today. The other spouse takes equivalent assets (more home equity, more savings) in exchange.
The Coverture Fraction
The coverture fraction is the universally accepted method for determining what portion of a pension was earned during the marriage: marital service years ÷ total service years. Only this marital portion is subject to division.
The Formula
Coverture Fraction = Years Married ÷ Total Service Years
Full Monthly Benefit = Accrual Rate × Service Years × Final Salary ÷ 12
Marital Monthly Benefit = Full Monthly Benefit × Coverture Fraction
Spouse's Share = Marital Monthly Benefit × Split Percentage
Present Value = Spouse's Monthly Benefit × Annuity Factor
(discounted back from retirement date to today)
Full Monthly Benefit = Accrual Rate × Service Years × Final Salary ÷ 12
Marital Monthly Benefit = Full Monthly Benefit × Coverture Fraction
Spouse's Share = Marital Monthly Benefit × Split Percentage
Present Value = Spouse's Monthly Benefit × Annuity Factor
(discounted back from retirement date to today)
Worked Example
Example: Teacher's Pension — Lisa and Robert
Robert is a teacher with 22 years of service. He and Lisa were married for 14 of those years. His pension uses a 1.5% accrual rate and he expects a final salary of $78,000.
Coverture Fraction14 ÷ 22 = 63.6%
Full Monthly Benefit$1,950/mo
Marital Monthly Amount$1,240/mo
Lisa's 50% Share$620/mo
Present Cash Value Today~$92,000
Lisa can either receive $620/month starting when Robert retires, or accept approximately $92,000 in other assets now (such as more home equity) as an offset.
Frequently Asked Questions
A QDRO applies to private employer plans governed by ERISA. Government and military pensions use different orders — often called a Court Order Acceptable for Processing (COAP) for federal civilian pensions, or a division order for state/local plans. The rules vary significantly; always check the specific plan's requirements.
This is a critical issue. Make sure the division order names the ex-spouse as a "surviving spouse" for survivor benefit purposes, if eligible. Without this protection, the ex-spouse's share disappears if the employee dies before retiring. Some plans also require the employee to elect a survivor annuity.
Generally not directly from the pension. Most defined-benefit plans don't allow early lump-sum payments to alternate payees. However, you can negotiate a present-value offset with other marital assets — your spouse keeps more retirement savings, you get more of something else today.
Military pensions are divided under the Uniformed Services Former Spouses' Protection Act (USFSPA). Direct payment from DFAS to the former spouse requires at least 10 years of marriage overlapping with 10 years of military service (the "10/10 rule"). State courts determine what share to award.
For large pensions or when choosing the offset approach, yes. A Certified Pension Consultant (CPC) or actuary can calculate the exact present value using mortality tables and economic assumptions. This typically costs $500–$2,000 but can save tens of thousands in negotiation.