SCMB vs. IBMM

Last updated Jun 4, 2026

SCMB (Schwab Municipal Bond ETF) and IBMM (iShares iBonds Dec 2024 Term Muni Bond ETF) are both Municipal Bonds funds - SCMB tracks the ICE AMT-Free Core U.S. National Municipal Index - Benchmark TR Gross while IBMM tracks the S&P AMT-Free Municipal Series Dec 2024 Index. Both are passively managed. SCMB charges 0.03%/yr vs 0.18%/yr for IBMM.

Performance

SCMB vs. IBMM - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Schwab Municipal Bond ETF (SCMB) and iShares iBonds Dec 2024 Term Muni Bond ETF (IBMM). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

SCMB

• 1D: -0.12%
• 1M: 0.60%
• YTD: 1.07%
• 6M: 1.55%
• 1Y: 6.86%
• 3Y*: 3.37%
• 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)

SCMB vs. IBMM - Yearly Performance Comparison

	2026 (YTD)
SCMB Schwab Municipal Bond ETF	0.05%
IBMM iShares iBonds Dec 2024 Term Muni Bond ETF	0.00%

Return for Risk

SCMB vs. IBMM — Risk / Return Rank

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

SCMB

SCMB Risk / Return Rank: 64
SCMB Sharpe Ratio Rank: 70
SCMB Sortino Ratio Rank: 75
SCMB Omega Ratio Rank: 81
SCMB Calmar Ratio Rank: 47
SCMB Martin Ratio Rank: 47

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.

SCMB vs. IBMM - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Schwab Municipal Bond ETF (SCMB) 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.

	SCMB	IBMM	Difference
Sharpe ratio: Return per unit of total volatility	2.34	—	—
Sortino ratio: Return per unit of downside risk	3.45	—	—
Omega ratio: Gain probability vs. loss probability	1.50	—	—
Calmar ratio: Return relative to maximum drawdown	2.36	—	—
Martin ratio: Return relative to average drawdown	7.89	—	—
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

	SCMB	IBMM	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.34	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.97	—	—

Drawdowns

SCMB vs. IBMM - Drawdown Comparison

The maximum SCMB drawdown since its inception was -6.13%, which is greater than IBMM's maximum drawdown of 0.00%. Use the drawdown chart below to compare losses from any high point for SCMB and IBMM.

Drawdown Indicators

	SCMB	IBMM	Difference
Max Drawdown Largest peak-to-trough decline	-6.13%	0.00%	-6.13%
Max Drawdown (1Y) Largest decline over 1 year	-2.92%	—	—
Max Drawdown (3Y) Largest decline over 3 years	-5.57%	—	—
Current Drawdown Current decline from peak	-0.87%	0.00%	-0.87%
Average Drawdown Average peak-to-trough decline	-1.32%	0.00%	-1.32%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.87%	—	—

Volatility

Volatility by Period

	SCMB	IBMM	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.04%	—	—
Volatility (6M) Calculated over the trailing 6-month period	2.17%	—	—
Volatility (1Y) Calculated over the trailing 1-year period	2.94%	0.00%	+2.94%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	4.16%	0.00%	+4.16%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	4.16%	0.00%	+4.16%

SCMB vs. IBMM - Expense Ratio Comparison

SCMB has a 0.03% expense ratio, which is lower than IBMM's 0.18% expense ratio. Despite the difference, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.

Dividends

SCMB vs. IBMM - Dividend Comparison

SCMB's dividend yield for the trailing twelve months is around 3.54%, while IBMM has not paid dividends to shareholders.

Position	TTM	2025	2024	2023	2022
IBMM iShares iBonds Dec 2024 Term Muni Bond ETF	0.00%	0.00%	0.00%	0.00%	0.00%
SCMB Schwab Municipal Bond ETF	3.54%	3.36%	3.34%	3.10%	0.59%

Frequently Asked Questions

Which ETF is better, SCMB or IBMM?

On fees, SCMB is cheaper at 0.03% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, SCMB or IBMM?

SCMB is cheaper with a 0.03% expense ratio, compared with 0.18% for IBMM.

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

SCMB has the higher dividend yield at 3.54%, compared with 0.00% for IBMM.

What is the main difference between SCMB and IBMM?

SCMB tracks ICE AMT-Free Core U.S. National Municipal Index - Benchmark TR Gross, while IBMM tracks S&P AMT-Free Municipal Series Dec 2024 Index. They also come from different issuers: Charles Schwab and iShares. Their fees differ too: 0.03% for SCMB and 0.18% for IBMM.