The IRS “Coupon” You’re Not Using: How to Generate Low Risk 4% Tax-Free Returns Without Touching Muni Bonds

Core Insights - The Alpha Architect 1-3 Month Box ETF (CBOE:BOXX) offers a unique investment strategy that aims to generate returns near 4% while providing a more tax-efficient alternative to traditional cash investments like Treasury or municipal bond ETFs [1][5][16] Investment Strategy - BOXX utilizes a box spread strategy in the options market to replicate the returns of short-term Treasury bills without actually holding them [6][7] - The box spread involves a combination of call and put options with the same expiration but different strike prices, allowing for a defined payout that is independent of market movements [8][9] Tax Efficiency - The structure of BOXX allows returns to compound internally, potentially deferring taxes for investors compared to traditional Treasury ETFs that distribute interest payments [5][16] - While BOXX has made capital gains distributions in the past, it generally reduces the frequency of taxable income events, making it more tax-efficient than many cash alternatives [18][20] Performance Metrics - As of March 4, 2026, BOXX's average yield to options expiration is approximately 3.98%, with an annualized return of 4.86% over the trailing three years based on net asset value [14][15] Cost Structure - BOXX has a gross expense ratio of 0.2449%, which is competitive compared to traditional Treasury ETFs, especially with a current fee waiver reducing the net expense ratio to 0.1949% [15] Market Context - The municipal bond market, while generally considered safe, has shown vulnerabilities, particularly during rapid interest rate increases, which can lead to significant losses for investors [3][4]