VIDAX vs. DMTFX

Last updated Jun 4, 2026

VIDAX (Delaware Tax-Free Idaho Fund) and DMTFX (Delaware Tax Free USA Fund) are both Municipal Bonds funds from Delaware Funds. Over the past 10 years, VIDAX returned 2.37%/yr vs 2.68%/yr for DMTFX. Their correlation of 0.88 suggests significant overlap in exposure. VIDAX charges 0.86%/yr vs 0.80%/yr for DMTFX.

Performance

VIDAX vs. DMTFX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Delaware Tax-Free Idaho Fund (VIDAX) and Delaware Tax Free USA Fund (DMTFX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, VIDAX achieves a 2.52% return, which is significantly higher than DMTFX's 2.21% return. Over the past 10 years, VIDAX has underperformed DMTFX with an annualized return of 2.37%, while DMTFX has yielded a comparatively higher 2.68% annualized return.

VIDAX

• 1D: 0.29%
• 1M: 1.26%
• YTD: 2.52%
• 6M: 2.92%
• 1Y: 9.05%
• 3Y*: 4.51%
• 5Y*: 1.03%
• 10Y*: 2.37%

DMTFX

• 1D: 0.30%
• 1M: 1.33%
• YTD: 2.21%
• 6M: 2.40%
• 1Y: 7.59%
• 3Y*: 4.54%
• 5Y*: 0.35%
• 10Y*: 2.68%

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

VIDAX vs. DMTFX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
VIDAX Delaware Tax-Free Idaho Fund	2.52%	3.78%	3.68%	6.51%	-11.90%	4.05%	4.61%	7.72%	1.27%	5.05%
DMTFX Delaware Tax Free USA Fund	2.21%	2.13%	3.17%	10.72%	-16.20%	5.19%	8.85%	8.97%	0.29%	7.19%

Correlation

The correlation between VIDAX and DMTFX is 0.88, indicating a strong positive relationship between their price movements. Combining them offers limited diversification - they tend to fall together during downturns.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.88
Correlation (3Y) Calculated over the trailing 3-year period	0.92
Correlation (5Y) Calculated over the trailing 5-year period	0.93
Correlation (10Y) Calculated over the trailing 10-year period	0.89
Correlation (All Time) Calculated using the full available price history since Jun 21, 1996	0.88

The correlation between VIDAX and DMTFX has been stable across timeframes, ranging from 0.88 to 0.93 - a consistent structural relationship.

Return for Risk

VIDAX vs. DMTFX — Risk / Return Rank

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

VIDAX

VIDAX Risk / Return Rank: 72
VIDAX Sharpe Ratio Rank: 80
VIDAX Sortino Ratio Rank: 87
VIDAX Omega Ratio Rank: 87
VIDAX Calmar Ratio Rank: 57
VIDAX Martin Ratio Rank: 50

DMTFX

DMTFX Risk / Return Rank: 40
DMTFX Sharpe Ratio Rank: 41
DMTFX Sortino Ratio Rank: 47
DMTFX Omega Ratio Rank: 54
DMTFX Calmar Ratio Rank: 32
DMTFX Martin Ratio Rank: 25

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.

VIDAX vs. DMTFX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Delaware Tax-Free Idaho Fund (VIDAX) and Delaware Tax Free USA Fund (DMTFX). 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.

	VIDAX	DMTFX	Difference
Sharpe ratio Return per unit of total volatility	2.61	1.86	+0.75
Sortino ratio Return per unit of downside risk	4.16	2.88	+1.28
Omega ratio Gain probability vs. loss probability	1.61	1.40	+0.20
Calmar ratio Return relative to maximum drawdown	2.88	2.13	+0.76
Martin ratio Return relative to average drawdown	10.34	6.22	+4.12
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

VIDAX vs. DMTFX - Sharpe Ratio Comparison

The current VIDAX Sharpe Ratio is 2.61, which is higher than the DMTFX Sharpe Ratio of 1.86. The chart below compares the historical Sharpe Ratios of VIDAX and DMTFX, 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

	VIDAX	DMTFX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.61	1.86	+0.75
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.20	0.05	+0.15
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.52	0.45	+0.07
Sharpe Ratio (All Time) Calculated using the full available price history	1.07	0.97	+0.10

Drawdowns

VIDAX vs. DMTFX - Drawdown Comparison

The maximum VIDAX drawdown since its inception was -17.08%, smaller than the maximum DMTFX drawdown of -21.92%. Use the drawdown chart below to compare losses from any high point for VIDAX and DMTFX.

Drawdown Indicators

	VIDAX	DMTFX	Difference
Max Drawdown Largest peak-to-trough decline	-17.08%	-21.92%	+4.84%
Max Drawdown (1Y) Largest decline over 1 year	-3.13%	-3.60%	+0.47%
Max Drawdown (3Y) Largest decline over 3 years	-8.68%	-11.32%	+2.64%
Max Drawdown (5Y) Largest decline over 5 years	-17.08%	-21.92%	+4.84%
Max Drawdown (10Y) Largest decline over 10 years	-17.08%	-21.92%	+4.84%
Current Drawdown Current decline from peak	0.00%	-0.25%	+0.25%
Average Drawdown Average peak-to-trough decline	-2.03%	-2.55%	+0.52%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.87%	1.23%	-0.36%

Volatility

VIDAX vs. DMTFX - Volatility Comparison

The current volatility for Delaware Tax-Free Idaho Fund (VIDAX) is 1.39%, while Delaware Tax Free USA Fund (DMTFX) has a volatility of 1.48%. This indicates that VIDAX experiences smaller price fluctuations and is considered to be less risky than DMTFX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	VIDAX	DMTFX	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.39%	1.48%	-0.09%
Volatility (6M) Calculated over the trailing 6-month period	2.56%	2.89%	-0.33%
Volatility (1Y) Calculated over the trailing 1-year period	3.50%	4.16%	-0.66%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	5.20%	6.61%	-1.41%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	4.57%	6.00%	-1.43%

VIDAX vs. DMTFX - Expense Ratio Comparison

VIDAX has a 0.86% expense ratio, which is higher than DMTFX's 0.80% expense ratio.

Dividends

VIDAX vs. DMTFX - Dividend Comparison

VIDAX's dividend yield for the trailing twelve months is around 3.41%, less than DMTFX's 4.26% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
DMTFX Delaware Tax Free USA Fund	4.26%	5.69%	4.77%	3.53%	3.67%	4.00%	4.24%	4.44%	3.64%	4.74%	4.70%	3.63%
VIDAX Delaware Tax-Free Idaho Fund	3.41%	4.50%	3.81%	2.93%	3.06%	2.34%	3.15%	3.95%	3.57%	3.76%	3.16%	3.17%

Frequently Asked Questions

Can I hold both VIDAX and DMTFX in my portfolio?

VIDAX and DMTFX have a correlation of 0.88, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, VIDAX or DMTFX?

DMTFX has higher volatility (1.48%) compared to VIDAX (1.39%). In terms of maximum drawdown, VIDAX dropped -17.08% vs DMTFX's -21.92%.

Which has better risk-adjusted returns?

VIDAX currently has the higher Sharpe Ratio (2.61 vs 1.86), 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.