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Educational only — not tax, legal, or investment advice. Whether two funds are “substantially identical” depends on facts and circumstances; the IRS has not published a bright-line test for ETFs. Consult a qualified tax professional before you trade.

Swap finder › US aggregate bond

BNDX tax-loss harvesting alternatives

Vanguard Total International Bond ETF (Vanguard) tracks Bloomberg Global Aggregate x USD Float Adjusted RIC Capped. If you hold BNDX at a loss, these ETFs track a different index, which generally makes them less likely to be considered “substantially identical” — while still moving closely with BNDX during the 31-day wait.

Held fundIndex trackedIssuerExpense ratioAUMHoldingsCategory
BNDX
Vanguard Total International Bond ETF
Bloomberg Global Aggregate x USD Float Adjusted RIC CappedVanguard0.07%$83.62B6908US aggregate bond

Sources: issuer fund page · public fund profile. Fund data as of 2026-10-16.

BNDX wash sale alternatives (different index)

ETFIndex trackedIssuerExpense ratioAUM1-yr correlationHoldings overlapNotes
FBNDactive
Fidelity Total Bond ETF
Actively managed (benchmark: Bloomberg U.S. Aggregate Bond Index)Fidelity0.36%$28.04B0.823n/adifferent strategy
IUSB
iShares Core Total USD Bond Market ETF
Bloomberg US UniversalBlackRock0.06%$48.88B0.820n/adifferent index
AGG
iShares Core U.S. Aggregate Bond ETF
Bloomberg US AggregateBlackRock0.03%$137.55B0.815n/adifferent index
BND
Vanguard Total Bond Market ETF
Bloomberg US Aggregate - Float AdjustedVanguard0.03%$162.85B0.812n/adifferent index
IGIB
iShares 5-10 Year Investment Grade Corporate Bond ETF
ICE BofA US Corporate (5-10 Y)BlackRock0.04%$18.82B0.807n/adifferent index
GOVT
iShares U.S. Treasury Bond ETF
ICE U.S. Treasury Core Bond IndexBlackRock0.05%$41.82B0.804n/adifferent index
IEF
iShares 7-10 Year Treasury Bond ETF
ICE BofA US Treasury (7-10 Y)BlackRock0.15%$41.22B0.803n/adifferent index
SPAB
State Street SPDR Portfolio Aggregate Bond ETF
Bloomberg US AggregateState Street0.03%$10.27B0.803n/adifferent index

Sorted by 1-year correlation of daily total returns with BNDX (through 2026-10-16). Holdings overlap = sum of the smaller weight of each common stock, from issuer holdings files; “n/a” where the issuer does not offer a free download or for bond/international/commodity funds. Hover a value for its as-of dates.

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30-day wash-sale calendar for BNDX

The window is 30 calendar days before and after the sale (61 days total, IRC §1091(a)). Buying the replacement fund right away is the point of a swap; the dates above are about buying back the fund you sold, or anything substantially identical to it.

Before you swap