Candice Horbacz
Investment in American financial markets is a key part of the country’s long-term economic trajectory. The tax treatment of investment impacts after-tax returns to saving and influences how Americans choose to invest, which can act as a barrier to domestic investment. The Generating Retirement Ownership Through Long-Term Holding (GROWTH) Act, proposed in both chambers of Congress by Sen. John Cornyn (R-TX) and Rep. Beth Van Duyne (R-TX) this session, seeks to make the tax treatment of investment funds more consistent and improve the tax treatment of saving in the U.S. by allowing investors to defer tax on qualifying reinvested capital gains distributions until they sell their fund shares. This legislative effort represents a significant step towards addressing long-standing disparities in how different investment vehicles are taxed, potentially reshaping the landscape for millions of American savers and investors by promoting greater tax neutrality and efficiency within the financial system.
Unpacking the Disparity: Mutual Funds vs. ETFs
At the heart of the GROWTH Act lies a fundamental difference in how mutual funds and exchange-traded funds (ETFs) are taxed, despite both being classified as Regulated Investment Companies (RICs) and holding similar underlying assets. This distinction creates an uneven playing field for investors, influencing their choices based on tax implications rather than economic merit.
Mutual funds, a cornerstone of retail investment for decades, are structured such that when shareholders redeem their fund shares, the fund itself may be required to sell underlying securities to meet those redemptions. For example, if a mutual fund owns a stock with an original cost basis of $20 that has appreciated to $100, and a shareholder redeems $100 worth of fund shares, the fund might sell that stock, realizing an $80 capital gain. Under current tax law, this realized capital gain is distributed to all remaining fund shareholders at the end of the year, regardless of whether those shareholders sold any of their own fund shares. This phenomenon, often referred to as "phantom income" or "phantom capital gains," means that mutual fund investors can incur a capital gains tax liability even while continuing to hold their investment positions and without receiving any cash distribution. These distributions are then typically reinvested, creating a situation where taxes are paid on gains that are not yet liquid.
In contrast, ETFs operate with a different redemption mechanism that largely avoids this issue. Retail ETF shareholders typically buy and sell their shares on secondary markets, similar to individual stocks, rather than directly redeeming them from the fund itself. Furthermore, large institutional investors, known as authorized participants (APs), can exchange blocks of ETF shares directly with the fund. These exchanges usually involve "in-kind" redemptions, where the AP receives a basket of the underlying securities rather than cash. Crucially, these in-kind redemptions do not trigger capital gains realizations at the fund level that would be distributed to remaining shareholders. As a direct consequence, an investor holding an ETF generally does not face capital gains tax liability until they sell their own ETF shares. This structural difference means that an investor could hold virtually identical portfolios in a mutual fund and an ETF, earn the same investment return, yet face significantly different current tax liabilities depending on the fund type. Data from the Investment Company Institute (ICI) consistently shows that average capital gains distributions are markedly higher for mutual funds than for ETFs, underscoring the tangible financial impact on investors.
This disparity, which has grown more pronounced with the increasing popularity and sophistication of ETFs since their widespread introduction in the 1990s, introduces a bias against mutual funds and complicates financial planning for investors. It compels investors to make choices based on tax avoidance rather than optimal asset allocation, potentially hindering efficient capital deployment across the economy.
The GROWTH Act: A Proposed Solution
The Generating Retirement Ownership Through Long-Term Holding (GROWTH) Act seeks to rectify this imbalance by deferring the recognition of qualifying reinvested capital gains distributions from mutual funds. Under the proposed legislation, investors would not owe tax on these reinvested gains until they ultimately sell their fund shares. This effectively aligns the tax treatment of mutual funds more closely with that of ETFs, eliminating the "phantom capital gains" issue for reinvested distributions. It is important to note that the act specifically targets reinvested capital gains; dividend and interest income received from mutual funds would continue to be taxed as under current law, maintaining consistency with how such income is treated across other investment vehicles.
The bill’s proponents argue that this change would foster greater horizontal equity in the tax code, ensuring that similarly situated investors face comparable tax liabilities regardless of their chosen fund structure. It also aims to promote neutrality, allowing investors to select funds based on their economic merits, management quality, and investment objectives rather than on mitigating an arbitrary tax burden. This approach is intended to simplify tax planning for individual investors and encourage long-term savings and investment, which are vital for national economic growth.
Legislative Push and Proponents’ Arguments
The GROWTH Act represents a bipartisan effort led by Senator John Cornyn (R-TX) and Representative Beth Van Duyne (R-TX). Their sponsorship highlights a shared recognition across the political spectrum of the need to modernize tax laws affecting retail investors.
Senator Cornyn, a senior member of the Senate Finance Committee, has historically advocated for tax policies that promote economic growth and reduce burdens on taxpayers. He has likely emphasized that the current tax discrepancy unfairly penalizes mutual fund investors, many of whom are middle-class Americans saving for retirement, education, or other long-term goals. His arguments would center on fairness, simplification, and encouraging long-term capital formation. "Our current tax code creates an unnecessary and unfair burden on mutual fund investors, many of whom are simply trying to save for their future," a statement from his office might read. "The GROWTH Act is a common-sense solution that levels the playing field, allowing Americans to invest without facing unexpected tax bills on gains they haven’t even realized."
Representative Van Duyne, a vocal proponent of reducing regulatory hurdles and fostering a competitive economic environment, would likely echo these sentiments, emphasizing the act’s role in boosting domestic investment and ensuring the tax code keeps pace with modern financial markets. Her perspective would focus on empowering individual investors and removing disincentives to saving. "The financial landscape has evolved, but our tax laws haven’t always kept up," she might argue. "This bill ensures that whether you choose a mutual fund or an ETF, your investment decisions are driven by sound financial strategy, not by antiquated tax rules. It’s about empowering Americans to grow their wealth more efficiently."
The proposal has likely garnered significant support from the financial industry, particularly from organizations like the Investment Company Institute (ICI), which represents the mutual fund and ETF industry. The ICI has long advocated for reforms that would equalize the tax treatment of investment products, citing the benefits for investors and the overall efficiency of capital markets. Their position would be that the bill streamlines investment processes, reduces complexity, and removes an artificial barrier that has historically favored one type of fund over another. This alignment of industry and legislative goals underscores the perceived benefit of the GROWTH Act for the broader investment ecosystem.
Economic and Fiscal Impact Analysis
The Tax Foundation’s analysis of the GROWTH Act provides critical insights into its potential economic and fiscal consequences. On a conventional basis, the proposal is estimated to reduce federal revenue by $37.7 billion over the decade from 2027 to 2036. This revenue impact is notably "front-loaded," meaning the largest reductions occur in the initial years after implementation. This pattern is typical for tax timing changes: as reinvested amounts previously subject to immediate capital gains tax now qualify for deferral, the government experiences an immediate decrease in collections. However, no deferred amounts have been sold yet, meaning the offsetting revenue from future sales has not materialized.
As the budget window progresses and investors eventually sell their fund shares, triggering the recognition of deferred gains, the net cost to the federal government is projected to drop substantially. The annual revenue loss is anticipated to fall to just above $1 billion per year in the latter part of the budget window, eventually reaching a lower steady-state cost. The Tax Foundation also notes that the long-run conventional revenue cost may be somewhat smaller than the scored estimate, primarily because reinvested returns that make up deferred tax liability can themselves compound and be subject to tax upon eventual sale, an effect not fully captured in the initial conventional estimate.
From a distributional perspective, the GROWTH Act is expected to have a modest but positive impact on after-tax incomes. In 2027, after-tax incomes are projected to increase by an average of 0.1 percent across all income groups. By 2036, as the initial deferral effects stabilize and some deferred gains are recognized, the change in tax liabilities becomes smaller, leading to an increase of less than 0.05 percent in after-tax incomes across the income spectrum. This relatively even distribution suggests that while the benefits are not concentrated solely at the top, they are also not overwhelmingly substantial for any particular income bracket, reflecting a broad-based improvement in investment efficiency rather than targeted wealth redistribution.
Beyond direct revenue and distributional effects, the GROWTH Act is anticipated to have broader economic implications. By increasing the after-tax returns to saving, the proposal is expected to encourage greater personal savings and investment. This, in turn, could lead to an increase in long-run Gross National Product (GNP), a key measure of the total income earned by American residents. Higher savings provide more capital for businesses to invest in expansion, innovation, and job creation. However, the net economic impact also hinges on how the federal revenue loss is financed. If the government finances the deficit through additional borrowing, higher national debt could increase payments to foreign investors holding U.S. debt, potentially offsetting some of the increase in American incomes. This highlights the complex interplay between tax policy, government finance, and national economic output.
Industry Perspectives and Investor Benefits
The financial services industry, particularly mutual fund providers, would likely welcome the passage of the GROWTH Act. For years, mutual funds have faced a competitive disadvantage against ETFs due to their differing tax treatment. While ETFs have seen explosive growth over the past two decades, attracting trillions in assets, mutual funds have continued to be a popular choice for retirement accounts and diversified portfolios. According to the Investment Company Institute (ICI), mutual fund assets stood at over $27 trillion at the end of 2023, while ETF assets exceeded $8 trillion. The GROWTH Act would help to level the playing field, making mutual funds a more attractive option for long-term investors by eliminating the "phantom capital gains" issue.
For individual investors, the benefits are clear. The primary advantage is simplified tax planning and improved after-tax returns. Investors would no longer need to account for capital gains distributions from their mutual funds each year if those gains are reinvested. This reduces the administrative burden of tax preparation and ensures that the growth of their investment compounds more effectively over time without annual tax erosion. This could particularly benefit those in taxable brokerage accounts, who currently bear the full brunt of these annual distributions. The act essentially allows investors to benefit from the power of tax-deferred growth, similar to what is enjoyed in tax-advantaged retirement accounts like 401(k)s and IRAs, but within a taxable investment vehicle. This enhanced deferral fosters a more conducive environment for long-term wealth accumulation and retirement planning.
Potential Trade-offs and Broader Context
While the GROWTH Act offers significant improvements in tax neutrality and equity, it also presents certain trade-offs. One notable concern is the potential for an exacerbated "lock-in" effect. By expanding the scope of tax deferral, the proposal could encourage taxpayers to hold onto investments longer than they otherwise might, solely to avoid triggering capital gains recognition. This "lock-in" effect can hinder the efficient allocation of capital across the economy, as investors may be reluctant to sell underperforming assets and reallocate funds to more productive uses if doing so incurs an immediate tax liability.
However, the GROWTH Act includes a crucial mitigation for this issue: it proposes a rule that prevents taxpayers from avoiding tax altogether via the "step-up in basis" provision. Under current law, inherited assets generally receive a "step-up" in their cost basis to their fair market value at the time of the owner’s death, effectively eliminating capital gains tax for the heir on appreciation that occurred during the deceased’s lifetime. The GROWTH Act’s proposed rule would ensure that deferred gains from mutual funds would still be recognized and taxed upon eventual sale by the heir, thereby limiting the incentive for investors to hold assets indefinitely purely for estate planning purposes to avoid capital gains taxes entirely. This mechanism helps to balance the benefits of deferral with the need to maintain tax integrity and ensure that capital gains are eventually taxed.
From a broader perspective, the GROWTH Act is a targeted improvement in the tax treatment of investment savings. It addresses a specific, long-standing distortion in the tax code. However, many tax policy experts argue that more comprehensive reforms are needed to fully remove distortions in the taxation of capital gains and promote a truly neutral system for saving and investment. Discussions around shifting towards a consumption tax system, or implementing universal savings accounts (USAs) that offer broad tax advantages for all types of savings, represent larger-scale reforms that could fundamentally reshape how capital gains are treated. The ultimate goal, as articulated by economists and policymakers, is for the tax code to play a smaller role in determining how taxpayers invest and which fund vehicles they choose, allowing economic merits to be the sole drivers of investment decisions. The GROWTH Act, while not a wholesale overhaul, is a pragmatic step in that direction, striving to create a more equitable and efficient environment for American investors.
Conclusion and Outlook
The GROWTH Act represents a significant bipartisan effort to modernize a specific segment of U.S. tax law, aiming to bring greater fairness and efficiency to the investment landscape. By addressing the disparate tax treatment of mutual funds and ETFs, the bill seeks to foster tax neutrality, encourage long-term savings, and potentially boost overall economic output. While the proposal carries a notable upfront revenue cost, its long-term benefits in terms of horizontal equity, simplified tax planning for investors, and more efficient capital allocation are compelling. As the bill progresses through Congress, its passage could mark a meaningful improvement for millions of American investors, reinforcing the principle that investment decisions should be driven by financial strategy, not by unintended tax consequences. The discussions surrounding the GROWTH Act also serve as a valuable reminder of the ongoing need for comprehensive tax reform that aligns the nation’s fiscal policies with the realities of modern financial markets and the long-term economic well-being of its citizens.
