Pure ordinary-income bracket-stacking math. No GPR, no §453, no basis. Each year’s structured payment is treated as ordinary income, stacked on top of your other income for that year. The savings come from not getting bracket-stacked at 37% all in one year.
1. 2026 Federal ordinary income brackets (MFJ)
10%: $0 – $23,850
12%: $23,850 – $96,950
22%: $96,950 – $206,700
24%: $206,700 – $394,600
32%: $394,600 – $501,050
35%: $501,050 – $751,600
37%: $751,600 – ∞
# Single brackets are roughly half of MFJ caps · HOH falls between
2. Year-1 lump-sum stack (cash scenario)
TotalIncome = OtherOrdIncome + GrossFee
FedTaxcash = bracketTax(TotalIncome, FED_ORD) − bracketTax(OtherOrdIncome, FED_ORD)
# Marginal increment is the fee's tax — likely all in 35-37% if fee is large
3. Structured payment (no §453, no GPR — whole payment is ordinary)
PMT = Fee × r ÷ (1 − (1 + r)−n) # amortizing annuity, same as property SIS PMT formula
# Each year:
AnnualPayment = PMT (constant if no COLA)
TaxableThisYear = PMT (100% ordinary — no basis recovery, no LTCG split)
4. Per-year tax (structured scenario)
# Each year, the PMT is stacked on top of OtherOrdIncome (which may change over time):
Stackstart = OtherOrdIncomeyr
Stackend = OtherOrdIncomeyr + PMT
FedTaxyr = Σi [bracketIncrementi] × ordRatei
StateTaxyr = stateBracketTax(Stackend) − stateBracketTax(Stackstart)
NIITyr = 0 # attorney fees are earned income, not investment income — NIIT does NOT apply to the fee itself
# NIIT may apply to OTHER investment income each year if MAGI exceeds threshold
IRMAAyr = irmaaSurcharge(MAGIyr) # if attorney is 63+ Medicare-eligible
5. Effective rate comparison
EffRatecash = TotalTaxcash ÷ Fee # likely 50-55% in CA/NY for large fees
EffRatestructured = (Σ TaxYr) ÷ (Σ PMTYr) # typically 35-42% blended
Savings = (EffRatecash − EffRatestructured) × Fee
6. Deferred-start growth (if applicable)
# If first payment delayed by d years, carrier compounds principal at r during deferral:
PMTdeferred = Fee × (1+r)d × r ÷ (1 − (1 + r)−n)
# Year-1 of payment becomes Year-(d+1) of plan; structure pays from d+1 to d+n
7. Childs v. Commissioner — the controlling precedent
103 T.C. 634 (1994), aff'd 89 F.3d 856 (11th Cir. 1996)
Holding: An attorney who agrees pre-settlement that contingency fee
be paid through a fixed annuity is NOT in constructive receipt of the
lump sum — only taxable on each payment as received.
Confirmed by:
• Rev. Rul. 79-220 (annuity payments taxed when received)
• PLR 200836019, 200847017 (attorney fee structuring approved)
• ABA Formal Opinion 466 (ethics — fee structuring permissible)
Statutory + case-law citations:IRC §451(a) cash-basis taxpayer · Reg. §1.451-2 constructive receipt · IRC §83 (NOT applicable here — earned income not property) · IRC §409A (NOT applicable to structured attorney fees · see Rev. Rul. 2007-32) · Childs v. Comm'r, 103 T.C. 634 (1994), aff'd 89 F.3d 856 (11th Cir. 1996) · Rev. Rul. 79-220 · Rev. Rul. 2007-32 · PLR 200836019 · PLR 200847017 · ABA Formal Opinion 466 (2014). 2026 federal ordinary brackets per Rev. Proc. 2025-XX (TCJA-extended).
Source code transparency:This calculator’s JavaScript is inline on this page — view-source (Ctrl-U) to audit every formula, every constant. No external dependencies, no API calls.