TAXM vs. IBMM

Last updated Jun 4, 2026

TAXM (BondBloxx IR+M Tax-Aware ETF for Massachusetts Residents) and IBMM (iShares iBonds Dec 2024 Term Muni Bond ETF) are both Municipal Bonds funds. TAXM is actively managed, while IBMM is passively managed. TAXM charges 0.35%/yr vs 0.18%/yr for IBMM.

Performance

TAXM vs. IBMM - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in BondBloxx IR+M Tax-Aware ETF for Massachusetts Residents (TAXM) and iShares iBonds Dec 2024 Term Muni Bond ETF (IBMM). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

TAXM

• 1D: -0.06%
• 1M: 0.51%
• YTD: 1.18%
• 6M: 1.54%
• 1Y: 6.62%
• 3Y*: —
• 5Y*: —
• 10Y*: —

IBMM

• 1D: 0.00%
• 1M: 0.00%
• YTD: —
• 6M: —
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

*Multi-year figures are annualized to reflect compound growth (CAGR)

TAXM vs. IBMM - Yearly Performance Comparison

	2026 (YTD)
TAXM BondBloxx IR+M Tax-Aware ETF for Massachusetts Residents	0.37%
IBMM iShares iBonds Dec 2024 Term Muni Bond ETF	0.00%

Return for Risk

TAXM vs. IBMM — Risk / Return Rank

Compare risk-adjusted metric ranks to identify better-performing investments over the past 12 months.

TAXM

TAXM Risk / Return Rank: 70
TAXM Sharpe Ratio Rank: 78
TAXM Sortino Ratio Rank: 83
TAXM Omega Ratio Rank: 86
TAXM Calmar Ratio Rank: 51
TAXM Martin Ratio Rank: 52

The rank (0–100) shows how this investment's returns compare to the risk taken. Higher = better. Based on the past 12 months of data, combining Sharpe, Sortino, and other metrics used by quantitative funds and institutional investors.

TAXM vs. IBMM - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for BondBloxx IR+M Tax-Aware ETF for Massachusetts Residents (TAXM) and iShares iBonds Dec 2024 Term Muni Bond ETF (IBMM). Risk-adjusted metrics are performance indicators that assess an investment's returns in relation to its risk, enabling a more accurate comparison of different investment options.

	TAXM	IBMM	Difference
Sharpe ratio: Return per unit of total volatility	2.49	—	—
Sortino ratio: Return per unit of downside risk	3.67	—	—
Omega ratio: Gain probability vs. loss probability	1.53	—	—
Calmar ratio: Return relative to maximum drawdown	2.46	—	—
Martin ratio: Return relative to average drawdown	8.62	—	—
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

Sharpe Ratios by Period

	TAXM	IBMM	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.49	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	1.14	—	—

Drawdowns

TAXM vs. IBMM - Drawdown Comparison

The maximum TAXM drawdown since its inception was -3.10%, which is greater than IBMM's maximum drawdown of 0.00%. Use the drawdown chart below to compare losses from any high point for TAXM and IBMM.

Drawdown Indicators

	TAXM	IBMM	Difference
Max Drawdown Largest peak-to-trough decline	-3.10%	0.00%	-3.10%
Max Drawdown (1Y) Largest decline over 1 year	-2.70%	—	—
Current Drawdown Current decline from peak	-0.80%	0.00%	-0.80%
Average Drawdown Average peak-to-trough decline	-0.71%	0.00%	-0.71%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.77%	—	—

Volatility

Volatility by Period

	TAXM	IBMM	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.94%	—	—
Volatility (6M) Calculated over the trailing 6-month period	2.04%	—	—
Volatility (1Y) Calculated over the trailing 1-year period	2.67%	0.00%	+2.67%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	3.56%	0.00%	+3.56%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	3.56%	0.00%	+3.56%

TAXM vs. IBMM - Expense Ratio Comparison

TAXM has a 0.35% expense ratio, which is higher than IBMM's 0.18% expense ratio.

Dividends

TAXM vs. IBMM - Dividend Comparison

TAXM's dividend yield for the trailing twelve months is around 3.29%, while IBMM has not paid dividends to shareholders.

Position	TTM	2025
IBMM iShares iBonds Dec 2024 Term Muni Bond ETF	0.00%	0.00%
TAXM BondBloxx IR+M Tax-Aware ETF for Massachusetts Residents	3.29%	2.75%

Frequently Asked Questions

Which ETF is better, TAXM or IBMM?

On fees, IBMM is cheaper at 0.18% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, TAXM or IBMM?

IBMM is cheaper with a 0.18% expense ratio, compared with 0.35% for TAXM.

Which ETF pays a higher dividend yield, TAXM or IBMM?

TAXM has the higher dividend yield at 3.29%, compared with 0.00% for IBMM.

What is the main difference between TAXM and IBMM?

They also come from different issuers: BondBloxx and iShares. Their fees differ too: 0.35% for TAXM and 0.18% for IBMM.