The Schwab backdoor Roth IRA is a two-step strategy for high earners above the 2026 Roth IRA income limits ($165,000 single / $246,000 MFJ). At Charles Schwab, the conversion costs $0 and can be completed entirely online. 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 Schwab
Step 1: Open a Schwab Traditional IRA
Go to schwab.com → “Open an Account” → “IRA” → “Traditional IRA”. The account opens with $0 minimum. If you already have a Schwab Traditional IRA, proceed to Step 2.
Step 2: Make a Non-Deductible Cash Contribution
Contribute up to $7,000 ($8,000 if 50+) to the Traditional IRA. Leave the money in the Schwab Government Money Fund (SWGXX) or similar cash position — do not invest before converting. Any gains before conversion are taxable on conversion.
Step 3: Convert to Schwab Roth IRA
At schwab.com:
- Log in and go to “Accounts” → “IRA Conversions”
- Select your Traditional IRA as the source account
- Select your Schwab Roth IRA as the destination
- Enter the amount to convert (the full cash balance)
- Review and confirm
The conversion typically processes within 1–3 business days. Schwab generates a 1099-R for the conversion.
Convert promptly — within days of contributing — to avoid taxable gains.
Step 4: Invest in Your Roth IRA
After the conversion, invest the cash in your chosen Roth IRA funds — SWPPX, Vanguard ETFs, or whatever matches your strategy.
Step 5: File IRS Form 8606
File Form 8606 with your federal tax return for 2026. This reports your non-deductible Traditional IRA contribution and conversion basis, preventing double taxation.
Why Schwab Works Well for Backdoor Roth
| Feature | Details |
|---|---|
| Conversion fee | $0 |
| IRA minimum | $0 |
| Traditional + Roth IRA on same platform | Yes — simplifies the conversion process |
| Index fund availability | SWPPX at 0.02% ER in Roth IRA |
| Fractional investing | Yes (Stock Slices, S&P 500 stocks) |
| Support options | 24/7 phone; 400+ branch locations |
Having both accounts at Schwab means the conversion is entirely online — no transfers between institutions, no forms mailed, no waiting for checks.
Schwab-Specific Consideration: Intelligent Portfolios Cash Drag
If you plan to use Schwab Intelligent Portfolios inside your Roth IRA after the backdoor conversion, be aware that IP holds 6–10% in cash by design. On a $7,000 Roth IRA, $420–$700 may sit in cash rather than invested in the market.
For maximum market exposure in a backdoor Roth Roth IRA, self-directed investing in index funds (like SWPPX) keeps you 100% invested.
See Schwab Intelligent Portfolios for a full analysis.
Common Schwab Backdoor Roth Mistakes
- Investing before converting: Any gains in the Traditional IRA are taxable on conversion — keep the money in cash until converted
- Forgetting Form 8606: Without it, the IRS may treat your conversion as fully taxable
- Not checking for existing IRA balances: The pro-rata rule applies to all your Traditional, SEP, and SIMPLE IRAs — not just the Schwab account
- Missing the contribution deadline: Non-deductible contributions must be made by April 15, 2027 for the 2026 tax year; conversions can happen anytime
For the full Schwab Roth IRA overview, see Schwab 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