VBTLX vs. SWAGX: Vanguard Total Bond Market I or Schwab US Aggregate Bond Ind?
Figures last verified October 31, 2026
Vanguard versus Schwab for the boring, essential bond slot. Same Aggregate index, fee difference of a single basis point.
| VBTLX | SWAGX | |
|---|---|---|
| Fund | Vanguard Total Bond Market Index Fund Admiral Shares | Schwab US Aggregate Bond Index Fund |
| Family | Vanguard | Schwab |
| Category | Bond | Bond |
| Type | Index | Index |
| Expense ratio | 0.05% | 0.04% |
| Cost per $10k/yr | $5 | $4 |
| Minimum | $3,000 | $0 |
| Strategy | Tracks the Bloomberg US Aggregate Float Adjusted Index — investment-grade US government, corporate, and mortgage-backed bonds. | Tracks the Bloomberg US Aggregate Bond Index — broad investment-grade US bonds. |
SWAGX (0.04%) and VBTLX (0.05%) are the same fund in different wrappers. Hold whichever your brokerage offers without a transaction fee, keep it in a tax-advantaged account, and move on.
About VBTLX
Bonds in a long-term portfolio are shock absorbers, not engines, and VBTLX is the standard-issue shock absorber: roughly 11,000 investment-grade US bonds, about two-thirds government-backed, with intermediate duration. It will not make you rich. Its job is to be the thing you sell to buy stocks when stocks are on sale, and to keep a 2008 or a 2022 from becoming the day you panic.
About SWAGX
Same Agg, different sticker: SWAGX tracks the identical Bloomberg US Aggregate index as VBTLX and FXNAX, at 0.04% with no minimum. Thousands of Treasuries, agency mortgage bonds, and investment-grade corporates with intermediate duration — the textbook ballast allocation, indexed without commentary.
Whichever you pick, the principle is the same one that runs through this whole site: minimize cost, hold for decades, ignore the noise. See how both stack up against the field in our best index funds by category, or run the numbers yourself with the expense ratio calculator.
Expense ratios and minimums drawn from fund provider documentation; last verified October 31, 2026. Editorial opinion, not investment advice. Confirm figures against the official prospectus before investing.