T-Bill Ladder Strategy Calculator (Build Monthly Cash Flow with Treasury Bills)
A T-Bill ladder strategy lets you generate regular cash flow while keeping your money invested in safe U.S. Treasury bills. Instead of locking everything into one bill, you split your investment across multiple maturities so cash becomes available at regular intervals.
💡 A well-built ladder means you never have to wait months for your money — cash keeps coming in on schedule.
Split equally across each rung. Minimum $1,000.
Check latest rate → TreasuryDirect.gov
Your investment is split equally across 4 bills.
How to Build a T-Bill Ladder (Step-by-Step)
- Split your total investment into equal parts
- Buy T-Bills with different maturity dates
- Let each bill mature at different times
- Reinvest into new T-Bills to maintain the ladder
This calculator automates the entire process and shows your exact cash flow schedule.
Why Use a T-Bill Ladder?
Putting all your cash into a single T-Bill locks everything up until maturity. A ladder solves this by staggering your maturities — so you always have cash becoming available while the rest keeps earning.
💧 Liquidity
Lump Sum: All cash locked until one date
Ladder: Cash available regularly ✔
📈 Rate Averaging
Lump Sum: Locked at one rate
Ladder: Captures rising rates ✔
🔄 Flexibility
Lump Sum: No flexibility until maturity
Ladder: Adjust each rung at maturity ✔
🛡️ Risk
Lump Sum: Full interest rate risk
Ladder: Spread across rate cycles ✔
How the T-Bill Ladder Works
Step 1 — Split your money equally
Divide your total investment into 4 equal parts — one for each rung of your ladder. For example, $40,000 becomes four $10,000 bills. The calculator does this automatically.
Step 2 — Buy each rung with a different T-Bill
To create an immediate stagger, each rung buys a real T-Bill of a different duration on Day 1 (e.g., 4-week, 13-week, 26-week, 26-week for a 26-week ladder). This means you have cash coming in at different times from the very start — not after waiting 6 months for everything to mature at once.
Step 3 — Reinvest into your target duration
When each bill matures, reinvest it into your target duration. After one full cycle, all 4 rungs are the same type and one matures on a predictable schedule. Buy through TreasuryDirect.gov or a brokerage like Fidelity or Schwab — both offer auto-reinvestment so you do not need to do anything manually.
Day 1 purchases (4 rungs, $10,000 each):
Rung 1: 4-Week T-Bill — matures in 28 days, earns $35
Rung 2: 13-Week T-Bill — matures in 91 days, earns $113.75
Rung 3: 26-Week T-Bill — matures in 182 days, earns $227.50
Rung 4: 26-Week T-Bill — matures in 182 days, earns $227.50
At each maturity: reinvest into a new 26-week bill
After one full cycle: all 4 rungs are 26-week bills, one matures every ~13 weeks
Steady-state earnings: $227.50 every ~13 weeks — predictable, hands-free
Tip: Auto-Roll
On TreasuryDirect, enable auto-reinvestment and each maturing T-Bill automatically buys a new one — zero manual work. Most brokerages offer the same feature.
Choosing the Best T-Bill Ladder Strategy
| Ladder Type | Rungs | Cash Available | Best For |
|---|---|---|---|
| 4-Week Ladder | 4 × 4-week T-Bills | Every 4 weeks (~monthly) | Maximum liquidity, active cash management |
| 8-Week Ladder | 4 × 8-week T-Bills | Every 8 weeks (~bi-monthly) | More frequent liquidity than 13-week |
| 13-Week Ladder | 4 × 13-week T-Bills | Every 13 weeks (quarterly) | Quarterly planning, less active management |
| 17-Week Ladder | 4 × 17-week T-Bills | Every 17 weeks (~4 months) | Medium-term cash needs |
| 26-Week Ladder | 4 × 26-week T-Bills | Every 26 weeks (semi-annual) | Higher yield, semi-annual liquidity |
| 52-Week Ladder | 4 × 52-week T-Bills | Every 52 weeks (Annual) | Maximum yield, long-term savings |
| Mixed Ladder | 4W + 13W + 26W + 52W | Staggered — 4W first, then quarterly | Best balance — most popular for beginners |
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What Are Treasury Bills — Complete Guide
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Best T-Bill Duration Guide
Frequently Asked Questions (FAQ)
What is a T-Bill ladder strategy?
A T-Bill ladder strategy means spreading your investment across multiple T-Bills with different maturity dates. This ensures one bill matures regularly, giving you ongoing access to cash while the rest continues earning.
What are the benefits of a T-Bill ladder?
A T-Bill ladder provides regular cash flow, reduces interest rate risk, and captures changing rates over time. By staggering maturities, you avoid locking all your money into one rate and maintain liquidity.
How do I set up a T-Bill ladder on TreasuryDirect?
To set up a T-Bill ladder on TreasuryDirect, buy multiple T-Bills with different maturity dates and enable auto-reinvestment. This creates a staggered schedule where one bill matures regularly and rolls over automatically.
Is a T-Bill ladder better than buying one T-Bill?
Yes, a T-Bill ladder is usually better because it provides regular cash flow and flexibility. It also reduces the risk of locking your entire investment at one interest rate.