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Treasury Ladder Withdrawal Schedule Planner

The Treasury Ladder Withdrawal Schedule Planner estimates the Treasury principal needed today to support equal annual withdrawals over a chosen period. It discounts each planned withdrawal at an after-tax Treasury yield, reflecting federal income tax on Treasury interest while applying no state or local income tax to that interest.

This can help retirement savers or other cash-flow planners approximate how much Treasury exposure might be needed for a known sequence of annual spending. It is not a security-by-security ladder builder, and actual bill, note, and bond maturities may require different purchase amounts.

Inputs

USD
years
%
%
years
Result
—
Estimated starting Treasury value
Total planned withdrawals—
After-tax planning yield—
Modeled yield contribution—

1. Enter annual spending
Use the level amount you want the Treasury ladder to release each year.

2. Choose the number of withdrawals
This sets the length of the planned cash-flow sequence.

3. Enter Treasury yield
Use an annualized average yield for the securities you expect to ladder.

4. Enter federal tax rate
The planner reduces modeled interest by the federal marginal rate; it does not apply state/local income tax.

5. Set first withdrawal delay
Choose 0 for an immediate first withdrawal or 1 for a first withdrawal one year from now.

6. Review required starting value
Compare the present-value estimate with the total dollars you plan to withdraw.

After-tax yield = y × (1 − f)
Required value = Σ [Withdrawal / (1 + after-tax yield)^(d + k)]

y is Treasury yield, f is federal marginal rate, d is the first-withdrawal delay, and k indexes each annual withdrawal.

The calculation assumes a constant yield and equal yearly withdrawals. It does not model individual auction prices, coupons, or maturity-date gaps.

What the result means

The result is the approximate current value needed, under the entered after-tax yield, to match the planned annual Treasury withdrawals.

Treasury interest is generally federally taxable and exempt from state and local income tax; individual tax circumstances can still differ.

Given: $25,000 annual withdrawals for 12 years, 4.20% Treasury yield, 22% federal rate, first withdrawal in 1 year.

Calculation: After-tax yield = 4.20% × 78% = 3.276%. Present value of the 12 equal withdrawals ≈ $244,800.

Result: Estimated starting Treasury value of about $244,800.

Interpretation: Under the model, retained interest supplies the difference between the starting value and the $300,000 total planned withdrawals.

Why use an after-tax yield for withdrawals?

If interest is taxable, not all of the headline yield is available to support spending. The calculator reduces Treasury interest by the entered federal rate before discounting withdrawals.

Does this account for state taxes?

No state or local income tax is applied to Treasury interest because marketable Treasury interest is exempt from those taxes under current U.S. rules.

Can I model monthly withdrawals?

This version is annual. For monthly cash flows, a dedicated monthly present-value schedule would better reflect timing.

What if the first withdrawal happens immediately?

Set the delay to 0. The first withdrawal will then be included at full value rather than discounted by one year.

Does the planner guarantee the ladder will fund every withdrawal?

No. It is a mathematical estimate based on constant yield and equal cash flows; actual security selection and reinvestment conditions can create differences.