This site is built around one core move: contribute to a Traditional IRA or similar account to lower your MAGI and protect your benefits. Most of the articles here are about getting that foundation right. This one is different — it's for people who already have that foundation in place and want to understand two more advanced ideas that show up a lot in general personal finance content: the backdoor Roth, and year-end Roth conversions.
They sound similar. They're not the same thing, and they're not built for the same audience. Let's be honest about both.
The backdoor Roth: a high-income strategy, said plainly
A backdoor Roth is a two-step move: contribute to a Traditional IRA (without taking the tax deduction), then convert that money to a Roth IRA shortly after. People use this because direct Roth IRA contributions are blocked once your income crosses a certain line — for 2026, roughly $153,000 for single filers or $242,000 for married couples filing jointly. Above those limits, you can't contribute to a Roth directly at all. The backdoor is a legal workaround Congress is aware of and hasn't closed.
This is almost certainly not the strategy for most readers of this site
If you're managing the benefits cliff, your MAGI is likely well under six figures — often far under the income level where the backdoor Roth becomes relevant. The backdoor Roth exists to solve a problem (income too high to contribute to Roth directly) that most people navigating Medi-Cal thresholds simply don't have. We're including it here because it's a commonly discussed strategy and you may hear about it — but for almost everyone on this site, it's not the right tool.
If you ever do find yourself with income high enough that this becomes relevant — congratulations, genuinely, you've likely cleared the cliff entirely — the mechanics are: contribute to a Traditional IRA, convert it to Roth (this conversion step is taxable on any gains and on any pre-tax money already in your IRAs, due to something called the pro-rata rule), and report it on IRS Form 8606. At that point, you'd want a tax professional involved, not a free website.
The move that actually fits this site: a deliberate, small, year-end Roth conversion
Here's the related idea that's genuinely useful for this audience — and it's worth being precise about the terminology, because it's easy to mix up with recharacterization, which is a different process entirely.
- Recharacterization — undoing a contribution you made this year by reclassifying it as the other account type (Roth ↔ Traditional), before you file taxes. Still allowed. Covered in our recharacterization article.
- Roth conversion — deliberately moving existing money already sitting in a Traditional IRA into a Roth IRA. This is a taxable event the year it happens, and as of 2018, conversions cannot be undone — there's no "change your mind later."
The strategy you may have heard about — checking your numbers at the end of the year, and if you're safely under your benefits threshold with room to spare, converting a small amount from Traditional to Roth — is a real, legitimate technique. It just needs to be done carefully, because every dollar converted adds directly to your MAGI for that tax year.
"A Roth conversion adds to your MAGI the same year it happens. Do it carelessly and you can push yourself right back over the cliff you spent all year staying under."
How to think through it, step by step
Calculate your actual year-end MAGI first
Before considering any conversion, know your real number. Use the calculator with your actual full-year income and contributions to see exactly where your MAGI lands relative to your threshold.
Find your actual room — the gap between your MAGI and your threshold
If your threshold is $36,777 and your MAGI lands at $34,000, you have roughly $2,777 of room before you'd risk crossing the cliff.
Convert conservatively, well under that room — not right up to the edge
A conversion adds dollar-for-dollar to your MAGI. If you have $2,777 of room, converting close to that full amount leaves zero margin for error — any income surprise (a late invoice paid in December, an unexpected 1099) could push you over. Many people converting near a benefits threshold choose to use only a portion of their available room, leaving a buffer.
Understand the conversion is taxed as ordinary income that year
Whatever you convert is added to your taxable income for the year, even though you're not withdrawing the cash — it's added to your tax bill, not paid from the IRA itself (unless you choose to pay the tax from IRA funds, which is generally discouraged since it reduces what's actually growing for retirement).
Confirm it's irreversible before you submit it
Unlike recharacterizing a same-year contribution, a Roth conversion cannot be undone once processed. Double-check your numbers before clicking submit, not after.
That $1,500 moved into Roth now grows completely tax-free for retirement, with tax-free withdrawals later — a real, permanent benefit, achieved without crossing the cliff, because the math was checked first and a buffer was deliberately left in place.
Why bother — what's the actual benefit?
Money in a Traditional IRA is taxed when you eventually withdraw it in retirement. Money converted to Roth (and the conversion tax paid) grows and comes out completely tax-free later. If you're confident you're in a relatively low tax bracket today — which is common for people near benefits thresholds — converting a small amount now, while the tax cost is low, can be a genuinely smart long-term move. You're paying tax on a small amount today instead of a potentially larger amount (original contribution plus decades of growth) later.
You likely have an unusually good reason to consider this
Most people doing Roth conversions are trying to manage their tax bracket. People managing the benefits cliff have an additional, very concrete number to manage against: the threshold itself. That actually makes the math more precise, not less — you're not guessing at a vague "stay in a low bracket" goal, you have an exact dollar figure (your MAGI room) to work within.
A small error here can undo a year of careful planning
Because a conversion is irreversible and adds directly to your MAGI, this is the kind of move worth double-checking — ideally with a tax professional, a free VITA tax preparer, or at minimum by running the numbers twice with very conservative estimates of any remaining income for the year. This article is educational, not a substitute for that check.
Check your year-end room before converting anything
Use the calculator with your actual full-year numbers to see exactly how much room you have under your threshold.
Try the calculator →