The Fidelity backdoor Roth IRA lets high earners contribute to a Roth IRA regardless of income. At Fidelity, the process is straightforward: contribute to a Traditional IRA, then convert to Roth — all at no cost. The 2026 contribution limit is $7,000 ($8,000 if age 50+).
What Is a Backdoor Roth IRA?
The backdoor Roth IRA is a two-step legal strategy for high earners above the Roth IRA income limits:
- Make a non-deductible contribution to a Traditional IRA (no income limit)
- Convert that Traditional IRA balance to a Roth IRA
The result is effectively the same as a direct Roth contribution — after-tax money that grows tax-free — executed in two steps.
2026 Roth IRA Income Limits (Why the Backdoor Is Needed)
| Filing Status | Full Direct Contribution | Partial | Phased Out |
|---|---|---|---|
| Single or Head of Household | Under $150,000 | $150,000–$165,000 | Over $165,000 |
| Married Filing Jointly | Under $236,000 | $236,000–$246,000 | Over $246,000 |
| Married Filing Separately | Under $10,000 | $10,000–$25,000 | Over $25,000 |
If your income exceeds the phaseout ceiling ($165,000 single / $246,000 MFJ), you cannot contribute to a Roth IRA directly. The backdoor Roth is your alternative.
The Pro-Rata Rule: The Critical Complication
If you have existing pre-tax money in any Traditional IRA, SEP-IRA, or SIMPLE IRA, the IRS applies the pro-rata rule to conversions. You cannot selectively convert only your after-tax (non-deductible) dollars.
Example:
- You have $63,000 in pre-tax Traditional IRA contributions
- You add $7,000 in non-deductible contributions (total IRA = $70,000)
- Ratio: 90% pre-tax, 10% after-tax
- When you convert $7,000 to Roth: 90% ($6,300) is taxable — not tax-free
- The backdoor benefit is largely eliminated by the existing pre-tax IRA
Solution: Roll pre-tax IRA funds into your employer’s 401(k) before executing the backdoor Roth. Many 401(k) plans accept incoming rollovers.
If you have no other IRA balances, the pro-rata rule does not apply — your $7,000 non-deductible contribution converts to Roth with zero tax.
2026 Backdoor Roth Contribution Limits
| Detail | Amount |
|---|---|
| Annual limit (under 50) | $7,000 |
| Annual limit (age 50+, with catch-up) | $8,000 |
| Contribution deadline | April 15, 2027 |
| Conversion deadline | December 31, 2026 (for same-year conversion) |
Convert Promptly — Do Not Let It Sit
After making the non-deductible traditional IRA contribution, convert to Roth within days. If the investment earns gains before conversion, those gains are taxable on conversion. The standard advice: contribute and convert in the same week.
Tax Reporting: Form 8606
A backdoor Roth IRA requires you to file IRS Form 8606 with your tax return. This form tracks your non-deductible contributions and the basis in your IRA, ensuring the IRS knows the conversion was from after-tax money. Without Form 8606, you may be double-taxed on conversion.
Step-by-Step: Backdoor Roth IRA at Fidelity
Step 1: Open a Fidelity Traditional IRA (if you don’t have one)
Go to fidelity.com → “Open an Account” → “Traditional IRA”. The account opens instantly with $0 minimum. If you already have a Fidelity Traditional IRA, skip this step.
Step 2: Make a Non-Deductible Contribution
Contribute up to $7,000 ($8,000 if 50+) to the Traditional IRA for 2026. When asked during the contribution process, designate it as a current-year non-deductible contribution (or simply note it as such for Form 8606 filing).
Do not invest the contribution yet — leave it in the default settlement money market fund (Fidelity Government Money Market Fund, SPAXX or similar). This avoids investment gains that would be taxable on conversion.
Step 3: Convert to Roth IRA
At Fidelity:
- Log in to fidelity.com
- Go to “Accounts & Trade” → “Transfer”
- Select “Roth Conversion”
- Choose your Traditional IRA as the source account
- Select your Roth IRA as the destination
- Enter the full balance to convert (or a partial amount)
- Confirm and submit
The conversion typically processes within 1–3 business days. Fidelity will generate a 1099-R tax form showing the conversion.
Convert promptly — ideally within the same week as the contribution. Any investment gains before conversion are taxable.
Step 4: Reinvest in Your Roth IRA
After the conversion, the cash lands in your Roth IRA settlement account. Now invest it in your chosen funds — FZROX, VOO, or whatever your Roth allocation calls for.
Note on ZERO funds: If you had invested in Fidelity ZERO funds in the Traditional IRA before conversion, you must sell first, then convert the cash, then rebuy ZERO funds in the Roth. ZERO funds are not directly convertible.
Step 5: File IRS Form 8606
With your 2026 federal tax return, file Form 8606 to report your non-deductible traditional IRA contribution. This creates a cost basis record with the IRS, proving the contribution was after-tax and the conversion is not double-taxed.
Why Fidelity Is a Good Choice for Backdoor Roth
| Feature | Details |
|---|---|
| Conversion fee | $0 |
| IRA minimum | $0 |
| Traditional IRA and Roth IRA on same platform | Yes — simplifies conversion |
| ZERO fund availability in Roth IRA | Yes (after converting cash) |
| Fractional shares in Roth IRA | Yes (fully invest every dollar) |
| Customer support | 24/7 by phone; 200+ branch locations |
Having both the Traditional IRA and Roth IRA at the same broker — Fidelity — makes the conversion a few clicks rather than an account-to-account transfer.
Fidelity-Specific Watch-Out: ZERO Funds
If your goal is to use Fidelity ZERO funds in your Roth IRA:
- Make the non-deductible traditional IRA contribution in cash (money market)
- Convert the cash directly to Roth — do not invest in ZERO funds first
- After the conversion, buy ZERO funds in the Roth IRA
This avoids the extra sell step and the 1–2 day settlement wait.
Is Doing a Backdoor Roth at Fidelity Worth It?
For high earners above the Roth income limit, yes — unambiguously, if:
- You have no other pre-tax IRA balances (avoids pro-rata complications)
- Or you can roll pre-tax IRAs into your 401(k) first
- You plan to file Form 8606
The Fidelity platform makes the execution as easy as any broker’s, at $0 cost.
For a Roth IRA comparison across brokers, see best Roth IRA accounts. For Fidelity’s general Roth IRA guide, see Fidelity Roth IRA.
The content on Wealthvieu is for informational purposes only and should not be considered financial, tax, or investment advice. Consult a qualified professional before making financial decisions. Full disclaimer · Editorial policy