Backdoor Roth IRA

The Roth IRA is one of the best accounts in the tax code — tax-free growth and tax-free withdrawals forever. But there are income limits. If you earn above $165,000 (single) or $246,000 (married) in 2025, you can't contribute directly. The Backdoor Roth IRA is a legal two-step workaround that lets high earners get money into a Roth regardless of income. It's been available since 2010, and despite periodic threats in Congress to close it, it remains fully legal.

How It Works — Two Simple Steps

Step 1: Contribute to a Traditional IRA. Make a non-deductible contribution of up to $7,000 ($8,000 if 50+) to a traditional IRA. Because your income is too high, you won't get a tax deduction — this is an after-tax contribution. That's fine. The deduction isn't the point.

Step 2: Convert to a Roth IRA. Shortly after (some people wait a day, some a week — there's no required waiting period), convert the entire traditional IRA balance to a Roth IRA. Since you already paid tax on the contribution (it was non-deductible), the conversion itself generates little or no additional tax.

That's it. You now have $7,000 in a Roth IRA that will grow tax-free forever.

The Critical Requirement: No Existing Traditional IRA Balance

This is where most people make a costly mistake. The Backdoor Roth works cleanly only if you have no other pre-tax money in any traditional IRA, SEP IRA, or SIMPLE IRA. If you do, the "pro-rata rule" kicks in and creates an unexpected tax bill.

The pro-rata rule: The IRS doesn't let you cherry-pick which dollars get converted. If you have $93,000 in pre-tax IRA money and you add $7,000 in after-tax money, your total IRA balance is $100,000 — of which only 7% is after-tax. When you convert $7,000, only 7% ($490) is tax-free. The other 93% ($6,510) is taxable.

The fix: Before doing a Backdoor Roth, roll any existing traditional IRA, SEP IRA, or SIMPLE IRA balance into your employer's 401(k) plan (most plans accept rollovers). This zeroes out your traditional IRA balance and makes the Backdoor Roth clean.

If you don't have an employer 401(k), consider a Solo 401(k) (if you have any self-employment income) as a place to roll your traditional IRA money. The key is getting the pre-tax IRA balance to zero.

Step-by-Step Walkthrough

1. Verify no pre-tax IRA balances. Check all traditional, SEP, and SIMPLE IRAs. If any have pre-tax money, roll them into a 401(k) first.
2. Open a traditional IRA (if you don't have one) at the same brokerage where you have your Roth IRA. This makes the conversion easier.
3. Contribute $7,000 (non-deductible) to the traditional IRA. Put it in a money market or settlement fund — you don't want it to gain or lose value before conversion.
4. Wait a short time. While there's no legal required waiting period, many advisors suggest waiting a few days to a week to separate the contribution and conversion as distinct events.
5. Convert to Roth IRA. Initiate a Roth conversion for the full traditional IRA balance. At most brokerages, this is a few clicks online.
6. File Form 8606 with your tax return. This form tracks your non-deductible contributions and ensures you aren't double-taxed. Your tax software should generate this automatically.
7. Repeat annually. Do this every year. Over 10 years, that's $70,000+ in a Roth IRA.

Common Mistakes

Having pre-tax IRA money. The pro-rata rule is the #1 mistake. Check before you start.

Not filing Form 8606. Without this form, the IRS may treat your conversion as fully taxable. Keep records.

Contributing to the wrong type of IRA. Make sure your contribution is to a traditional IRA (not a Roth directly, which would violate the income limits).

Leaving money in the traditional IRA. Convert the entire balance. If you leave some behind, it complicates future conversions.

Waiting too long to convert. If the money earns gains while sitting in the traditional IRA before conversion, those gains are taxable upon conversion. Convert quickly while the balance is close to your original contribution amount.

Is It Legal?

Yes. The IRS has explicitly acknowledged the Backdoor Roth as legal. There's no specific rule allowing it — it works because there's no income limit on non-deductible traditional IRA contributions and no income limit on Roth conversions. Congress has proposed closing this loophole multiple times (most recently in the Build Back Better Act), but as of 2025, it remains available.

The strategy is used by millions of Americans, recommended by major financial institutions, and supported by tax professionals. It's not a gray area — it's standard tax planning for high earners.