Most bond investors hold a single intermediate bond fund like BND. When rates rise, the fund loses value; when rates fall, it gains. The fund handles reinvestment of maturing bonds automatically. It's fine — but for specific situations, a DIY bond ladder offers better control, lower fees, and cleaner tax treatment.
A bond ladder is a self-managed portfolio of individual bonds with staggered maturities. As each matures, you reinvest at the then-current rate. The ladder provides predictable income, known maturity values, and complete control over credit and duration exposure.
The Structure
Classic 10-year Treasury ladder:
- $10K in 1-year T-bill
- $10K in 2-year Treasury note
- $10K in 3-year Treasury note
- ... and so on to 10-year Treasury
Total portfolio: $100K spread across 10 maturities. Each year, the 1-year maturing is reinvested into a new 10-year note. The ladder rolls forward.
The Advantages vs. Bond Funds
Predictable income: each year you know exactly what interest and principal you'll receive.
No expense ratio: Treasury bonds have zero ongoing fees. BND costs 0.03% annually. On $100K, that's $30 per year — marginal but real.
Known maturity values: $10K par value bond matures at $10K. You're never forced to sell at a loss (unlike a fund facing redemptions).
Tax control: you choose when to sell (taking gains or losses). Funds distribute gains whenever they choose.
Custom duration: build a ladder matching your specific needs (shorter if you're risk-averse, longer if you want more yield).
The Disadvantages
Complexity: more steps than buying a fund. Annual rebalancing required.
Minimum sizes: individual Treasuries sold in $1,000 increments. Creating a balanced ladder requires $10K+ per rung.
Limited credit diversification: pure Treasury ladder has no credit exposure. Corporate bond ladders require 20+ issuers for diversification.
No professional management: no one makes decisions about selling early or switching maturities.
The Corporate Bond Ladder
For higher yield, corporate bonds can substitute for Treasuries. But individual corporate bonds require:
- $50K+ per rung for reasonable diversification
- Credit research on each issuer
- Monitoring for downgrades
- Typically 15-25 bonds across the ladder
Most retail investors are better off with a corporate bond fund (LQD, VCIT) than building a corporate ladder.
The Muni Bond Ladder
For high-bracket taxpayers, a municipal bond ladder produces tax-free income. Similar structure to Treasury ladder, different securities.
Issues: muni liquidity is poor. Individual munis trade rarely. Pricing is opaque. Most investors use VTEB ETF instead of individual muni ladder.
When to Build Your Own Ladder
Good scenarios:
- Large bond portfolio ($200K+) where even 0.05% fees add up
- Specific cash flow needs (college payments in years 3, 5, 7 — ladder accordingly)
- Tax sensitivity requiring control over realized gains
- Concerns about fund manager behavior in redemption crises
Bad scenarios:
- Small bond allocation ($50K or less) — fund is simpler
- You want corporate or muni diversification — fund is better
- You don't want to spend 2-3 hours per year on management
The Treasury Direct Option
Buy Treasuries directly from the US government at TreasuryDirect.gov:
- No transaction fees
- Automatic reinvestment available
- Access to all Treasury maturities including T-bills
- I-Bonds and TIPS also available
Treasury Direct is clunky (UI from 2005) but works. Alternative: buy through Fidelity/Schwab/Vanguard which charge nothing for Treasuries.
The Maturity Choice
5-year ladder: more conservative, faster rate adjustment, lower yield.
10-year ladder: balanced duration, moderate yield pickup.
20-year ladder: long-duration exposure, highest yields available, but more interest rate risk.
Most retail bond ladders use 5-10 year structures. Matches typical retirement withdrawal horizons.
The Rising Rate Advantage
When rates rise:
- Bond funds lose value (NAV drops as bond prices fall)
- Ladder doesn't lose value if held to maturity (principal guaranteed at maturity)
- Ladder reinvests at higher rates each year (benefits from the increase)
This is the ladder's core appeal: psychological protection from mark-to-market losses. Fund investors see red on statements. Ladder investors see upcoming maturities at par.
The Practical Recommendation
For most investors: BND ETF in IRA is simpler and adequate. For investors with $200K+ in bonds and specific control needs: consider a Treasury ladder.
The mathematical performance difference is small. The operational and psychological differences can be larger. Pick based on your preferences.