Backdoor Roth IRA for Tech Employees

Most tech employees earning $200K+ cannot contribute directly to a Roth IRA — their income is above the limit. The backdoor Roth is the legal workaround: a two-step process that's been available since 2010 and explicitly blessed by the IRS. This guide covers the mechanics, the one trap that bites most people (the pro-rata rule), and the exact steps to execute correctly in 2026.

Why you can't just open a Roth IRA

Direct Roth IRA contributions phase out at the following 2026 MAGI thresholds:¹

A senior engineer at a FAANG company with $300K+ total comp is almost certainly above the cutoff. This isn't a niche problem — it affects most of the tech-employee audience this site serves.

The contribution limit you're leaving on the table: $7,500/year in 2026 ($8,600 if age 50+, with a $1,100 SECURE 2.0-indexed catch-up).¹ That's not a huge number on its own — but $7,500/year invested in a Roth account at 7% real return for 25 years compounds to ~$515,000 of tax-free assets.

The two-step backdoor process

There is no income limit on traditional IRA contributions — only on the deductibility of those contributions. And there has been no income limit on Roth conversions since 2010. The backdoor Roth exploits both facts:

1. Contribute to a traditional IRA — non-deductible. Anyone with earned income can contribute up to $7,500 in 2026, regardless of income. You won't get a deduction (your income exceeds the deductibility limit too), but you'll have $7,500 of after-tax basis in the IRA.
2. Convert the traditional IRA to a Roth IRA. Do this immediately — ideally within a few days of the contribution. Because you contributed after-tax dollars, the conversion is tax-free: the IRS already has its cut.

The pro-rata rule — the trap that catches most people

The backdoor Roth is clean and tax-free only if you have no other pre-tax IRA money. If you have a rollover IRA, a SEP-IRA, or a SIMPLE IRA with pre-tax funds in it, the IRS applies the pro-rata rule — and your supposedly tax-free conversion becomes partially taxable.

The IRS treats all your traditional, SEP, and SIMPLE IRA balances as a single pool when calculating how much of any conversion is taxable. The taxable fraction is:

taxable % = pre-tax IRA balance ÷ total traditional IRA balance

A concrete example:

You wanted to move $7,500 into a Roth tax-free. Instead you owe income tax on ~$7,000 of the conversion at your marginal rate (likely 32–37% for tech workers). The backdoor failed to deliver its main benefit.

How to neutralize the pro-rata rule

The fix: get your pre-tax traditional IRA balance to zero before doing the backdoor. The most common path for tech workers:

To check whether your plan accepts rollovers: log into your 401(k) portal (Fidelity NetBenefits, Vanguard, Schwab, etc.) or call the plan's customer line and ask directly. The phrase is: "Does this plan accept incoming rollover contributions from a traditional IRA?" Most large tech company plans do. Some smaller-company or startup plans do not.

You're in the clear without this step if you've never had a pre-tax IRA — no rollover IRAs, no SEP-IRA from freelancing, no SIMPLE IRA. Many younger tech workers who've always earned above the income limits fall here: they could never do a deductible IRA contribution, so they never accumulated pre-tax IRA balances. Check before assuming.

Form 8606 — why it matters

When you make a non-deductible IRA contribution, you must file IRS Form 8606 with your tax return for that year. This is how the IRS tracks your after-tax basis. Without it, they have no record that you already paid tax on those dollars — and you risk paying tax on the conversion again.

• Part I of Form 8606: reports your non-deductible contributions and cumulative basis. File this every year you make a non-deductible contribution.
• Part II of Form 8606: reports the Roth conversion. Combined with the 1099-R you'll receive from your IRA custodian, this tells the IRS the taxable portion of the conversion.
• If you forget: you can file Form 8606 late, but there's a $50 penalty per missed year. Fix it — don't leave your basis untracked.

Tax software (TurboTax, FreeTaxUSA, H&R Block) handles Form 8606 automatically if you enter your 1099-R correctly and indicate the contribution was non-deductible. The key input is telling the software you "did not take a deduction" for the contribution.

Step-by-step: how to execute in 2026

1. Clear the pre-tax IRA balance. If you have rollover IRA / SEP-IRA / SIMPLE IRA balances, roll them into your current employer's 401(k). Confirm the plan accepts rollovers first.
2. Open a traditional IRA at Fidelity, Vanguard, or Schwab if you don't have one. No income limit to open or fund.
3. Contribute $7,500 as non-deductible for 2026. Select money-market or cash — do not invest it. You will convert it immediately; you don't want market risk during the brief window it sits in the traditional IRA.
4. Convert to Roth IRA immediately. In the same custodian's interface, find "Convert to Roth IRA" and move the balance. Do this within days — any earnings that accrue before conversion are pre-tax and will be taxable when converted.
5. File Form 8606 with your taxes. Report the non-deductible contribution (Part I) and conversion (Part II). Your 1099-R from the custodian will show code 2 or 7 and the converted amount.

Backdoor Roth IRA vs. Mega Backdoor Roth — what's different

These are frequently confused. They are completely different mechanisms:

Most senior tech workers should do both: the Mega Backdoor Roth through their 401(k) for up to ~$47K of additional Roth space, and the backdoor Roth IRA for an additional $7,500. They're additive — you can't do one at the expense of the other.

Common mistakes

• Ignoring the pro-rata rule. Contributing $7,500 while you have $200K in a rollover IRA. Most of the conversion becomes taxable, defeating the purpose.
• Not converting immediately. Leaving your non-deductible contribution sitting in the traditional IRA for weeks or months. Earnings accrue as pre-tax and are taxable when converted.
• Forgetting Form 8606. Without it, the IRS treats your entire conversion as taxable. You can fix this retroactively but it's a headache.
• Marking the contribution as deductible in your tax software. This is the most common data-entry error. When your software asks "did you take a deduction for this IRA contribution?" — answer no.
• Skipping it because "$7,500 isn't a lot." $7,500/year × 25 years × 7% real return ≈ $515,000 of tax-free retirement assets. Do it every year.