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Use IRAs to defer taxes on long-term gains

Use IRAs to defer taxes on long-term gains

06/29/2025
Robert Ruan
Use IRAs to defer taxes on long-term gains

Retirement planning can feel overwhelming, but understanding the power of tax-advantaged accounts can transform a modest portfolio into a robust nest egg. Individual Retirement Arrangements (IRAs) are among the most effective vehicles for capturing tax-deferred growth on investments and ensuring you make the most of every dollar you set aside.

In this in-depth guide, we explore the two primary IRA structures—traditional and Roth—unpack how tax deferral works, and illustrate strategies to maximize your retirement nest egg over the long haul.

Basics of IRAs

IRAs are retirement accounts designed to give your savings a tax advantage. Unlike a standard brokerage account, contributions and earnings within an IRA either reduce your taxable income now or grow and are withdrawn tax-free later.

Your choice between a traditional and a Roth IRA hinges on whether you prefer lower taxable income today or tax-free withdrawals in retirement. Each type carries its own rules, benefits, and eligibility requirements.

Traditional vs. Roth: A Comparative Table

How Tax Deferral Fuels Growth

When you invest inside a traditional IRA, every dividend, interest payment, and capital gain remains untouched by annual taxes. Instead of sending a portion of your returns to the IRS each year, you benefit from triple compounding on untaxed growth.

These reinvested earnings generate additional profits, creating a snowball effect that can dramatically outweigh the advantage of lower capital gains rates in a taxable account. The long-term advantage is clear: the full pre-tax value compounds, then is taxed only once upon withdrawal.

Contribution Limits for 2025

  • Maximum annual contribution: $7,000 (unchanged from 2024).
  • Age 50 or older: Additional $1,000 catch-up, for a total of $8,000.
  • Roth IRA income eligibility: Single filers under $150,000 MAGI; phase-out $150,000–$165,000. Married filing jointly phase-out $236,000–$246,000.
  • No income cap for traditional IRA contributions, but deductibility may be limited if you have a workplace retirement plan.

Power of Compounding: An Illustrative Example

Consider investing $10,000 at a 5% annual return over 40 years. In a taxable account, you lose a portion of each year’s gains to taxes, chipping away at your principal and future earnings.

Within an IRA, that same $10,000 experiences uninterrupted growth. By the end of the 40 years, even after ordinary income tax upon withdrawal, the IRA’s after-tax value can nearly double that of the taxable account, thanks to the absence of annual tax drag.

Withdrawal Rules and Penalties

  • Withdrawals before age 59½ generally incur a 10% early withdrawal penalty plus regular taxes (exceptions for first-time home purchase, qualified education expenses, and certain hardships).
  • After 59½, traditional IRA withdrawals are taxed as ordinary income; Roth IRA qualified withdrawals are fully tax-free.
  • Required Minimum Distributions (RMDs) for traditional IRAs begin at age 73. Roth IRAs have no RMDs for the original account owner.

Strategic Considerations

Managing IRAs effectively demands an understanding of your current tax bracket and anticipated rate in retirement. By deferring taxes today, you might optimize your tax bracket arbitrage—withdrawing at a lower rate years down the road.

For many, a combination of traditional and Roth IRAs delivers tax diversification and flexibility. You contribute to Roth accounts when your bracket is low, securing tax-free growth during your career, and lean on traditional IRAs when immediate deductions yield greater benefit.

Long investment horizons amplify the payoff. The longer your money stays sheltered, the more time it has to grow unburdened by annual taxes. This advantage compounds, making IRAs essential tools in any prudent retirement plan.

Exceptions and Eligible Investments

Not every asset is permissible within an IRA. Collectibles, certain precious metals, and life insurance contracts are typically excluded. However, most stocks, bonds, mutual funds, exchange-traded funds (ETFs), and many alternative investments are allowed.

It’s critical to understand prohibited transactions and avoid scenarios where you directly benefit from IRA-owned assets outside the account, as these can trigger severe penalties.

Key Takeaways

IRAs empower retirement savers to harness the full force of compound growth by sidestepping annual taxes on earnings. Properly utilized, they can lead to a substantially larger nest egg and can help you achieve financial freedom in your golden years.

Remember: know the contribution limits, understand the withdrawal rules, and choose the mix of traditional versus Roth accounts that best aligns with your tax projection. By doing so, you position yourself to enjoy a comfortable retirement unencumbered by surprise tax bills.

Robert Ruan

About the Author: Robert Ruan

Robert Ruan