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SUB tax-loss harvesting alternatives
iShares Short-Term National Muni Bond ETF (BlackRock) tracks ICE Short Maturity AMT-Free US National Municipal. If you hold SUB 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 SUB during the 31-day wait.
| Held fund | Index tracked | Issuer | Expense ratio | AUM | Holdings | Category |
|---|---|---|---|---|---|---|
| SUB iShares Short-Term National Muni Bond ETF | ICE Short Maturity AMT-Free US National Municipal | BlackRock | 0.07% | $12.48B | 3080 | Municipal bond |
Sources: issuer fund page · public fund profile. Fund data as of 2026-10-16.
SUB wash sale alternatives (different index)
| ETF | Index tracked | Issuer | Expense ratio | AUM | 1-yr correlation | Holdings overlap | Notes |
|---|---|---|---|---|---|---|---|
| MUB iShares National Muni Bond ETF | ICE AMT-Free US National Municipal | BlackRock | 0.05% | $49.93B | 0.810 | n/a | different index |
| TFI State Street SPDR Nuveen ICE Municipal Bond ETF | ICE AMT-Free US Select Municipal Index | State Street | 0.23% | $2.92B | 0.793 | n/a | different indexloose match |
| VTEB Vanguard Tax-Exempt Bond ETF | S&P National AMT-Free Municipal Bond | Vanguard | 0.03% | $51.55B | 0.790 | n/a | different indexloose match |
| SHM State Street SPDR Nuveen ICE Short Term Municipal Bond ETF | ICE 1-5 Year AMT-Free Broad Municipal Index | State Street | 0.20% | $3.48B | 0.726 | n/a | different indexloose match |
Sorted by 1-year correlation of daily total returns with SUB (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 SUB
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
- Turn off dividend reinvestment for SUB in every account (including IRAs) for the window — a reinvested dividend is a purchase.
- Check automatic investments, a spouse’s accounts, and any SUB bought in the 30 days before the sale.
- Your broker generally only flags wash sales for the identical security in the same account. You are responsible for the rest.
- Read how wash sales work and the FAQ, then confirm your plan with a tax professional.