INTAX vs. AFB

Last updated Jun 4, 2026

INTAX (Columbia Strategic Municipal Income Fund) and AFB (AllianceBernstein National Municipal Income Fund) are both Municipal Bonds funds. Over the past 10 years, INTAX returned 2.26%/yr vs 1.60%/yr for AFB. At a 0.26 correlation, their price movements are largely independent. INTAX charges 0.78%/yr vs 1.56%/yr for AFB.

Performance

INTAX vs. AFB - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Columbia Strategic Municipal Income Fund (INTAX) and AllianceBernstein National Municipal Income Fund (AFB). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, INTAX achieves a 2.38% return, which is significantly lower than AFB's 6.20% return. Over the past 10 years, INTAX has outperformed AFB with an annualized return of 2.26%, while AFB has yielded a comparatively lower 1.60% annualized return.

INTAX

• 1D: 0.27%
• 1M: 1.08%
• YTD: 2.38%
• 6M: 2.77%
• 1Y: 8.75%
• 3Y*: 4.69%
• 5Y*: 0.42%
• 10Y*: 2.26%

AFB

• 1D: -0.09%
• 1M: 1.72%
• YTD: 6.20%
• 6M: 5.81%
• 1Y: 15.69%
• 3Y*: 7.29%
• 5Y*: -1.26%
• 10Y*: 1.60%

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

INTAX vs. AFB - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
INTAX Columbia Strategic Municipal Income Fund	2.38%	3.80%	3.72%	7.92%	-14.56%	2.65%	5.05%	8.83%	0.51%	7.32%
AFB AllianceBernstein National Municipal Income Fund	6.20%	4.41%	4.10%	7.41%	-25.93%	7.25%	7.80%	20.13%	-5.43%	6.15%

Correlation

The correlation between INTAX and AFB is 0.38, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.38
Correlation (3Y) Calculated over the trailing 3-year period	0.49
Correlation (5Y) Calculated over the trailing 5-year period	0.41
Correlation (10Y) Calculated over the trailing 10-year period	0.33
Correlation (All Time) Calculated using the full available price history since Jan 30, 2002	0.26

The correlation between INTAX and AFB shifts across timeframes, from 0.26 (all time) to 0.49 (3 years), reflecting how their relationship changes across market environments.

Return for Risk

INTAX vs. AFB — Risk / Return Rank

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

INTAX

INTAX Risk / Return Rank: 66
INTAX Sharpe Ratio Rank: 69
INTAX Sortino Ratio Rank: 82
INTAX Omega Ratio Rank: 84
INTAX Calmar Ratio Rank: 53
INTAX Martin Ratio Rank: 44

AFB

AFB Risk / Return Rank: 50
AFB Sharpe Ratio Rank: 46
AFB Sortino Ratio Rank: 59
AFB Omega Ratio Rank: 50
AFB Calmar Ratio Rank: 48
AFB Martin Ratio Rank: 48

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.

INTAX vs. AFB - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Columbia Strategic Municipal Income Fund (INTAX) and AllianceBernstein National Municipal Income Fund (AFB). 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.

	INTAX	AFB	Difference
Sharpe ratio Return per unit of total volatility	2.43	2.01	+0.42
Sortino ratio Return per unit of downside risk	3.87	3.26	+0.61
Omega ratio Gain probability vs. loss probability	1.57	1.39	+0.18
Calmar ratio Return relative to maximum drawdown	2.80	2.64	+0.15
Martin ratio Return relative to average drawdown	9.34	9.98	-0.64
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

INTAX vs. AFB - Sharpe Ratio Comparison

The current INTAX Sharpe Ratio is 2.43, which is comparable to the AFB Sharpe Ratio of 2.01. The chart below compares the historical Sharpe Ratios of INTAX and AFB, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Sharpe Ratios by Period

	INTAX	AFB	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.43	2.01	+0.42
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.07	-0.12	+0.19
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.42	0.14	+0.28
Sharpe Ratio (All Time) Calculated using the full available price history	0.67	0.33	+0.35

Drawdowns

INTAX vs. AFB - Drawdown Comparison

The maximum INTAX drawdown since its inception was -36.87%, smaller than the maximum AFB drawdown of -50.98%. Use the drawdown chart below to compare losses from any high point for INTAX and AFB.

Drawdown Indicators

	INTAX	AFB	Difference
Max Drawdown Largest peak-to-trough decline	-36.87%	-50.98%	+14.11%
Max Drawdown (1Y) Largest decline over 1 year	-3.11%	-5.96%	+2.85%
Max Drawdown (3Y) Largest decline over 3 years	-8.91%	-16.32%	+7.41%
Max Drawdown (5Y) Largest decline over 5 years	-20.74%	-35.17%	+14.43%
Max Drawdown (10Y) Largest decline over 10 years	-20.74%	-35.17%	+14.43%
Current Drawdown Current decline from peak	0.00%	-9.57%	+9.57%
Average Drawdown Average peak-to-trough decline	-5.15%	-8.98%	+3.83%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.93%	1.58%	-0.65%

Volatility

INTAX vs. AFB - Volatility Comparison

The current volatility for Columbia Strategic Municipal Income Fund (INTAX) is 1.35%, while AllianceBernstein National Municipal Income Fund (AFB) has a volatility of 2.64%. This indicates that INTAX experiences smaller price fluctuations and is considered to be less risky than AFB based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	INTAX	AFB	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.35%	2.64%	-1.29%
Volatility (6M) Calculated over the trailing 6-month period	2.55%	5.73%	-3.18%
Volatility (1Y) Calculated over the trailing 1-year period	3.63%	7.88%	-4.25%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	5.68%	10.94%	-5.26%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	5.42%	11.24%	-5.82%

INTAX vs. AFB - Expense Ratio Comparison

INTAX has a 0.78% expense ratio, which is lower than AFB's 1.56% expense ratio.

Dividends

INTAX vs. AFB - Dividend Comparison

INTAX's dividend yield for the trailing twelve months is around 3.77%, less than AFB's 5.02% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
AFB AllianceBernstein National Municipal Income Fund	5.02%	4.72%	3.83%	3.62%	5.26%	4.32%	4.18%	3.93%	4.53%	4.71%	5.34%	5.80%
INTAX Columbia Strategic Municipal Income Fund	3.77%	4.97%	3.79%	3.08%	2.76%	2.45%	2.46%	3.45%	3.79%	3.76%	4.09%	4.36%

Frequently Asked Questions

Can I hold both INTAX and AFB in my portfolio?

INTAX and AFB have a correlation of 0.38, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, INTAX or AFB?

AFB has higher volatility (2.64%) compared to INTAX (1.35%). In terms of maximum drawdown, INTAX dropped -36.87% vs AFB's -50.98%.

Which has better risk-adjusted returns?

INTAX currently has the higher Sharpe Ratio (2.43 vs 2.01), meaning it's delivered slightly more return per unit of risk over the trailing 12 months. However, this ranking shifts over time - use the Risk/Return Score above for a more comprehensive view that combines Sharpe, Sortino, and other measures used by quantitative funds.