Bond Ladder Calculator: How to Build Predictable Income in Retirement

A bond ladder staggers maturities so a portion of your fixed-income portfolio matures every year, providing predictable income regardless of interest rate movements.

Instead of putting $200,000 into a single 5-year bond, you split it: $40,000 maturing in year 1, $40,000 in year 2, and so on. Each year, a rung of the ladder matures and you either spend it or reinvest at whatever rates are available.

How a Bond Ladder Works

$200,000 invested, 5-year Treasury ladder (2026 approximate rates):

| Maturity | Amount | Yield | Annual Interest | |----------|--------|-------|----------------| | 1-year | $40,000 | 4.6% | $1,840 | | 2-year | $40,000 | 4.4% | $1,760 | | 3-year | $40,000 | 4.3% | $1,720 | | 4-year | $40,000 | 4.2% | $1,680 | | 5-year | $40,000 | 4.2% | $1,680 | | Total | $200,000 | 4.34% avg | $8,680/yr |

Each year:

• Year 1 bond matures → $40,000 + $1,840 = $41,840 becomes available
• Option A: Spend it for income
• Option B: Reinvest as a new 5-year bond at current rates, extending the ladder

Bond Ladder vs. Bond Fund

| | Bond Ladder | Bond Fund | |--|------------|-----------| | Interest rate risk | Minimal — you hold to maturity | High — NAV falls when rates rise | | Predictability | Exact maturity amounts known | Fluctuates with market | | Flexibility | Low — bonds locked up | High — sell anytime | | Yield | Lock in current rates | Varies with market | | Management | Manual reinvestment | Automatic | | Best for | Income needs at specific dates | Long-term growth or short-term access |

In a rising rate environment, bond fund NAVs fall. A bond ladder is immune to this because you hold each bond to maturity and receive exactly what was promised.

10-Year Ladder for Retirement Income

$500,000 ladder, $50,000 maturing each year:

| Year | Maturity | Approximate Yield | Maturity Value | |------|----------|------------------|----------------| | 1 | $50,000 | 4.6% | $50,000 | | 2 | $50,000 | 4.4% | $50,000 | | 3-5 | $50,000 each | ~4.2% | $50,000 each | | 6-10 | $50,000 each | ~4.0-4.2% | $50,000 each |

Each year, $50,000 is available for spending without selling any equity. This provides the income floor while keeping the equity portion untouched for growth.

Types of Bonds for Ladders

| Bond Type | Pros | Cons | |-----------|------|------| | US Treasuries | Zero credit risk, state tax-free | Lower yield than corporates | | TIPS (inflation-adjusted) | Principal grows with inflation | Lower nominal yield | | CDs (bank) | FDIC insured | Less liquid than Treasuries | | Investment-grade corporate bonds | Higher yield | Credit risk, more complex | | Municipal bonds | Tax-free income | Lower yield pre-tax, credit risk |

For most retirees, Treasuries (state-tax-free, zero credit risk) and CDs (FDIC insured) are the safest choices for a retirement income ladder. Corporate bonds add yield but require credit research.

Building a Ladder with TreasuryDirect

US Treasuries can be purchased commission-free directly at TreasuryDirect.gov:

1. Open a TreasuryDirect account (free)
2. Purchase T-notes in the maturities you need
3. Bills mature at face value; interest paid semi-annually on notes
4. Set calendar reminders for maturity dates

Minimum purchase: $100. Typical increments: $1,000. Most practical ladder builds use $10,000-$50,000 per rung.

The TIPS Ladder for Inflation Protection

A TIPS (Treasury Inflation-Protected Securities) ladder is similar but the principal adjusts with the CPI each year. Better for retirees worried about inflation eroding purchasing power:

• Nominal Treasury: lock in $50,000 maturity in 5 years
• TIPS: lock in "$50,000 in today's purchasing power" in 5 years — actual maturity value adjusts upward with inflation

TIPS yields are lower (currently approximately 1.8-2.2% real yield vs. 4.2-4.6% nominal Treasury) but the inflation adjustment compensates. For retirements extending 20-30 years, TIPS ladders better preserve real purchasing power.

Frequently Asked Questions

How long should my bond ladder be?

Retirement income ladders typically span 5-15 years. A 10-year ladder covers a decade of guaranteed income while the equity portfolio handles long-term growth. As each year passes, you can extend the ladder by adding a new long-dated bond, maintaining the same structure indefinitely.

What happens if I need money before a bond matures?

Treasuries can be sold in the secondary market anytime. However, if interest rates have risen since you bought, you will receive less than face value. This is why bond ladders work best for income you plan to spend on schedule — not as an emergency fund. Keep a separate cash/HYSA emergency fund outside the ladder.

Is a CD ladder better than a Treasury ladder?

CDs often pay slightly more than Treasuries of similar duration. But CDs have early withdrawal penalties and are bank-institution-specific (FDIC insured up to $250,000 per bank). Treasuries are more liquid and state-tax-exempt. For amounts under $250,000 per bank, CDs can be a reasonable higher-yield alternative to Treasuries in a ladder.