TAXI vs. TDTF

Last updated Jun 4, 2026

TAXI (Northern Trust Intermediate Tax-Exempt Bond ETF) and TDTF (FlexShares iBoxx 5-Year Target Duration TIPS Index Fund) are both exchange-traded funds - TAXI is a Municipal Bonds fund tracking the ICE Intermediate Term Focused Municipal Bond Index, while TDTF is a Inflation-Protected Bonds fund tracking the iBoxx 5-Year Target Duration TIPS. Both are passively managed. At a 0.45 correlation, their price movements are largely independent. TAXI charges 0.05%/yr vs 0.18%/yr for TDTF.

Performance

TAXI vs. TDTF - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Northern Trust Intermediate Tax-Exempt Bond ETF (TAXI) and FlexShares iBoxx 5-Year Target Duration TIPS Index Fund (TDTF). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, TAXI achieves a 0.94% return, which is significantly lower than TDTF's 1.52% return.

TAXI

• 1D: -0.03%
• 1M: 0.46%
• YTD: 0.94%
• 6M: 1.55%
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

TDTF

• 1D: 0.00%
• 1M: -0.28%
• YTD: 1.52%
• 6M: 1.29%
• 1Y: 4.72%
• 3Y*: 4.46%
• 5Y*: 1.72%
• 10Y*: 2.94%

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

TAXI vs. TDTF - Yearly Performance Comparison

	2026 (YTD)	2025
TAXI Northern Trust Intermediate Tax-Exempt Bond ETF	0.94%	3.35%
TDTF FlexShares iBoxx 5-Year Target Duration TIPS Index Fund	1.52%	1.18%

Correlation

The correlation between TAXI and TDTF is 0.45, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (All Time) Calculated using the full available price history since Aug 20, 2025	0.45

Return for Risk

TAXI vs. TDTF — Risk / Return Rank

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

TDTF

TDTF Risk / Return Rank: 52
TDTF Sharpe Ratio Rank: 46
TDTF Sortino Ratio Rank: 49
TDTF Omega Ratio Rank: 45
TDTF Calmar Ratio Rank: 61
TDTF Martin Ratio Rank: 58

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.

TAXI vs. TDTF - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Northern Trust Intermediate Tax-Exempt Bond ETF (TAXI) and FlexShares iBoxx 5-Year Target Duration TIPS Index Fund (TDTF). 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.

Risk / return metrics aren't available yet — we need at least 12 months of trading data to calculate them.

Sharpe Ratios by Period

	TAXI	TDTF	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	—	1.56	—
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	—	0.30	—
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	—	0.58	—
Sharpe Ratio (All Time) Calculated using the full available price history	2.92	0.47	+2.45

Drawdowns

TAXI vs. TDTF - Drawdown Comparison

The maximum TAXI drawdown since its inception was -2.23%, smaller than the maximum TDTF drawdown of -12.02%. Use the drawdown chart below to compare losses from any high point for TAXI and TDTF.

Drawdown Indicators

	TAXI	TDTF	Difference
Max Drawdown Largest peak-to-trough decline	-2.23%	-12.02%	+9.79%
Max Drawdown (1Y) Largest decline over 1 year	—	-1.58%	—
Max Drawdown (3Y) Largest decline over 3 years	—	-3.79%	—
Max Drawdown (5Y) Largest decline over 5 years	—	-12.02%	—
Max Drawdown (10Y) Largest decline over 10 years	—	-12.02%	—
Current Drawdown Current decline from peak	-0.79%	-0.57%	-0.22%
Average Drawdown Average peak-to-trough decline	-0.46%	-2.91%	+2.45%
Ulcer Index Depth and duration of drawdowns from previous peaks	—	0.48%	—

Volatility

Volatility by Period

	TAXI	TDTF	Difference
Volatility (1M) Calculated over the trailing 1-month period	—	0.71%	—
Volatility (6M) Calculated over the trailing 6-month period	—	1.97%	—
Volatility (1Y) Calculated over the trailing 1-year period	1.90%	3.05%	-1.15%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	1.90%	5.69%	-3.79%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	1.90%	5.07%	-3.17%

TAXI vs. TDTF - Expense Ratio Comparison

TAXI has a 0.05% expense ratio, which is lower than TDTF'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

TAXI vs. TDTF - Dividend Comparison

TAXI's dividend yield for the trailing twelve months is around 2.00%, less than TDTF's 4.71% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
TAXI Northern Trust Intermediate Tax-Exempt Bond ETF	2.00%	0.85%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
TDTF FlexShares iBoxx 5-Year Target Duration TIPS Index Fund	4.71%	4.58%	3.98%	3.97%	7.60%	4.55%	1.13%	1.80%	2.60%	2.20%	1.51%	0.21%

Frequently Asked Questions

Can I hold both TAXI and TDTF in my portfolio?

TAXI and TDTF have a correlation of 0.45, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, TAXI or TDTF?

On fees, TAXI is cheaper at 0.05% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, TAXI or TDTF?

TAXI is cheaper with a 0.05% expense ratio, compared with 0.18% for TDTF.

Which ETF pays a higher dividend yield, TAXI or TDTF?

TDTF has the higher dividend yield at 4.71%, compared with 2.00% for TAXI.

What is the main difference between TAXI and TDTF?

TAXI is categorized as Municipal Bonds, while TDTF is Inflation-Protected Bonds. TAXI tracks ICE Intermediate Term Focused Municipal Bond Index, while TDTF tracks iBoxx 5-Year Target Duration TIPS. Their fees differ too: 0.05% for TAXI and 0.18% for TDTF.