Five Ways to Pay Roth Conversion Taxes (Without Cracking the Nest Egg)

Everyone loves the idea of a Roth conversion. Tax-free growth. Tax-free withdrawals. No required minimum distributions breathing down your neck at 73. It sounds like a cheat code for retirement.

Then the tax bill shows up.

Convert $200,000 from a traditional IRA and, depending on your bracket, you could owe $40,000 to $70,000 in federal and state taxes in a single year. That is the moment most people freeze — and where most conversions die on the whiteboard.

But the money to pay that tax has to come from somewhere. And where you pull it from can be the difference between a brilliant move and an expensive mistake. Here are the five ways HNW retirees actually fund the tax bill — ranked roughly from cleanest to most creative.

1. Pay from outside taxable assets

The gold standard. You use cash sitting in a savings account or a brokerage account to cover the tax, and 100% of the converted dollars land inside the Roth.

Why it wins: every dollar of the conversion gets to grow tax-free for the rest of your life (and your kids' lives, thanks to the 10-year inherited-Roth rule). Nothing leaks.

Best for: anyone with meaningful non-retirement savings and a long runway.

2. Pay from the IRA itself

The lazy path. You withhold the tax directly from the traditional IRA distribution — say, convert $200k, send $50k to the IRS, and $150k ends up in the Roth.

It works. It is also the most expensive way to do this if you are under 59½, because that $50k of withholding is treated as a distribution and can trigger a 10% penalty on top of the tax.

Best for: people over 59½ with no other liquid assets — and even then, only as a last resort.

3. The hybrid: IRA + outside + a premium-bonus product to "restore" the balance

This is where the marketing gets loud. You pay part of the tax from the IRA, part from outside, and then position the remaining IRA balance inside a fixed indexed annuity or MYGA that offers a 10–20% premium bonus. On paper, the account value looks like it never went down.

Real talk: the bonus is not free — it is baked into surrender charges and cap rates. But if you were going to buy the annuity anyway, stacking a Roth conversion on top can make the math sing. If you weren't, don't let the bonus wag the dog.

Best for: retirees who already want a portion of their portfolio in principal-protected income products.

4. Redirect ongoing cash flow

The one no one talks about. Instead of pulling from any account, you reroute money already in motion.

• Pause your 401(k) contributions for the conversion year and send that cash to the IRS instead.
• Crank up W-2 withholding at work so the tax gets paid a paycheck at a time.
• Make quarterly estimated payments out of pension, consulting, or Social Security income.

You are still paying externally — you are just using tomorrow's paychecks instead of yesterday's savings. For people who are still working part-time in their second act, this is often the cleanest lever.

Best for: anyone still drawing a paycheck who does not want to touch existing balances.

5. Offset the tax with losses, gifts, and time

The chess move. You don't find money — you make the tax bill smaller.

• Tax-loss harvesting. Bank realized capital losses in a taxable brokerage account to offset gains and shrink your effective tax on the conversion.
• Charitable stacking. Bunch two or three years of donations into a donor-advised fund in the conversion year. Or, if you are over 70½, use Qualified Charitable Distributions to knock down your IRA balance before you convert what's left.
• Multi-year staging. Instead of one $500k conversion, do five $100k conversions over five years — keeping each slice inside the 22% or 24% bracket and dodging the IRMAA cliffs on your Medicare premiums.

Best for: larger IRAs where a single conversion would blow past bracket lines or trigger IRMAA surcharges.

So which one is right for you?

Honestly? Most of the retirees we talk to use two or three of these at once. A little cash from the brokerage, a little withholding from a paycheck, a donor-advised fund to shave the top off the bracket, and a multi-year staging plan to keep IRMAA quiet.

The point of a Roth conversion is not to write the biggest check to the IRS you can — it is to write the smartest check. Pick the funding source that doesn't leak your nest egg, doesn't drag your Medicare premiums into the next tier, and doesn't lock you into a product you didn't want.

Convert on your terms. Not the tax code's.