You make finances sound like a one size fits all operation. Funny how no scenario you describe applies to me.
Living in a flyover state my income is low, probably comically low by your standards. So I can convert now and just let it sit for later. I won't be pulling it out in one year chunks the second it's been in the account for 5 years.
Additionally when I turn 55 I don't get access to any grand amount of money. I might be accessing my current employers 401k at that point if I leave the company after I turn 55, but it's a small account compared to my rollover from prior employment.
No it's age 59 1/2 when I get access to the big accounts. But there is also other ages to consider. Whatever age I retire at, the age I start collecting social security, the age I start taking required minimum distributions.
While a person could do Roth conversions in a simple ladder planning to spend them in discrete 1 year chunks and avoid converting any more than they need for those 1 year chunks, a person could also convert more now to avoid higher taxes later or less now because they can't afford to do more now and fill in the income need from non Roth sources. If they are doing more or less it's not the same as the example you give of a evenly repeating conversion ladder.
The big issue for me is that 72t forces me to declare a size payout ahead of time and stick with it for 5 years and there are penalties for not doing so once you start that path. Yes there are multiple ways to calculate the size of the payments but they don't vary it that much. I can't afford to do such a structured plan so I'll have to play it by ear and vary the amounts I'm working with more than a 72t plan would allow.
Due to the mix of accounts I have and the amount I have access to I'm just going to have to keep working or TSLA is going to have to have a much higher market cap. When I'll pull the trigger on retiring will be more about the stock price than my age. My income after retirement is likely to be many times higher than it is now.
But I guess in your world everyone makes the same amount, has the same expenses, has the same savings, and should all make the same choices.
No. I was focused on the tax implications. So if your situation will vary so much that you'll be converting different amounts to a Roth every year, then sure I can see how that would work better for you than 72t. But you would still be carrying out a conversion ladder of some form.
Regardless of whether or not you plan on converting a tiny amount of your 401k to Roth or larger chunks, the end result is still better to do it spread out over a few years versus a single large conversion. To start, here's a very brief summary of the federal income tax brackets for 2023 (assuming you do the conversion this year) (taken from
2022-2023 Tax Brackets and Federal Income Tax Rates - NerdWallet):
Tax rate | Taxable income bracket | Tax owed |
---|
10% | $0 to $11,000. | 10% of taxable income. |
12% | $11,001 to $44,725. | $1,100 plus 12% of the amount over $11,000. |
22% | $44,726 to $95,375. | $5,147 plus 22% of the amount over $44,725. |
24% | $95,376 to $182,100. | $16,290 plus 24% of the amount over $95,375. |
32% | $182,101 to $231,250. | $37,104 plus 32% of the amount over $182,100. |
35% | $231,251 to $578,125. | $52,832 plus 35% of the amount over $231,250. |
37% | $578,126 or more. | $174,238.25 plus 37% of the amount over $578,125. |
1) Lowest case. Assuming that after all the deductions, your taxable income is $0, then every dollar (up to $11,000) you convert from your 401k into a Roth will be taxed at 10%. If you convert more than that, then every dollar past $11,000 will be taxed at 12%. And every dollar above $44,725 (until $95,375) would be taxed at 22%. So on and so forth.
2) Middle case. Chances are though, some of your income is still taxable, despite all the deductions. Assuming your AGI (Adjusted Gross Income as reported on your tax return) came out to $11,000, then every dollar (up to $33,725) that you convert will be taxed at the starting point of 12%. And every dollar above $33,725 would be taxed at 22%. So on and so forth.
3) High case. Let's say you had a great year on income, and your AGI came in at $182,100, then every dollar (up to $48,850) you convert in your 401k into a Roth will be taxed at 32%!! And the money above that would be taxed at even higher rates!
So if you did a single large $300,000 conversion it would be like applying scenario 3 to almost half your entire conversion, even if you earned $0 this year. As compared to doing smaller chunks (e.g. $30k this year, $90k next year, $30k the year after, $60k after that, and finally $120k in the last year), which would keep as much of the conversion taxed at the lower brackets as possible.
This is the math that drove me to say that a single large conversion is a non-starter. And if you're retiring with less than $500k in your retirement funds and your cost-of-living can make that work, then congrats! But beware of inflation and medical bills (an HMO plan is easily $1000/month)!
Edit: In case it wasn't clear, Roth conversions are treated as "income" when calculating the taxes owed on it.