Best Robo-Advisors for a 401(k) Rollover, and How to Move It Safely
Last updated August 2026
Short answer
Where you roll it matters less than how you move it. Ask for a direct rollover by name: the plan sends the money straight to the new provider, nothing is withheld and there is no deadline. An indirect rollover pays you first, triggers mandatory withholding, and starts a short clock in which you must redeposit the full original amount including the part you did not receive. Rolling a traditional 401(k) into a Roth is a conversion and is generally taxable. Among platforms, Fidelity Go suits a plan already at the same firm, Betterment has the most guided process. Walnut is not a robo-advisor and is not an investment adviser.
A rollover is a one-time decision with real money attached, and the mechanics carry more risk than the platform choice does. Picking the second-best robo-advisor costs you a fraction of a percent a year. Getting the transfer wrong can make the whole balance taxable in a single year, so the mechanics come first here and the comparison second.
The four mechanics that decide the outcome
1. Direct rollover, which is the one you want
The plan sends the money straight to the new IRA provider. You never take possession, nothing is withheld, and there is no deadline to miss. Every platform above supports this and it is the default you should ask for by name.
2. Indirect rollover, and the withholding trap
If the plan pays the money to you instead, it is generally required to withhold a portion for federal tax. You then have a limited window to deposit the full original amount into the new IRA, including the part that was withheld and which you do not have, so you must make it up from other savings to avoid the shortfall being treated as a taxable distribution.
3. The 60-day rule
With an indirect rollover the clock is short and it is not flexible. Miss it and the money is generally treated as a distribution, taxable and potentially subject to an early-withdrawal penalty. This alone is the reason to insist on a direct rollover.
4. Traditional to Roth is a conversion, not just a move
Rolling a traditional 401(k) into a Roth IRA converts pre-tax money into after-tax money, and the converted amount is generally taxable in the year you do it. That can be a sensible plan or an expensive accident, and it is worth modelling before rather than discovering in April.
Everything above is about the plumbing rather than the destination, and it is where the avoidable losses happen. Specific limits, withholding rates and deadlines are set by rule and are adjusted over time, so confirm the current ones with the plan administrator and a tax professional rather than relying on any page's numbers.
Where the money can go
| Option | How the rollover works | What happens afterwards |
|---|---|---|
| Fidelity Go | Accepts direct rollovers into a traditional or Roth IRA; the custodian handles a large share of US workplace plans already | No advisory fee below a balance threshold, on the firm's own funds |
| Betterment | Guided rollover process into a traditional or Roth IRA, with the paperwork largely handled for you | Goal-based allocation with a glide path toward a retirement date, at around 0.25% |
| Wealthfront | Accepts rollovers into traditional, Roth and SEP IRAs | Automated allocation plus long-horizon projections |
| Vanguard Digital Advisor | Accepts rollovers into traditional and Roth IRAs | Very low all-in fee on broad index funds |
| Leaving it in the plan, or moving it to a new employer's plan | No rollover at all. The money stays in a workplace plan | Whatever the plan's fund menu and fees are, which is sometimes better than an IRA and sometimes much worse |
| Keep your own broker (not a robo-advisor) | Roll into a self-directed IRA at a broker you choose, then hold whatever you want | No advisory fee, because nothing is under management. You choose and maintain the allocation |
How this was ranked
On how well the option handles the rollover itself, then on what happens to the money for the decades afterwards: the glide path, the fee on the new balance, and account-type coverage. Tax features are excluded from the ranking, because a rollover IRA cannot use them.
The fifth entry is not a robo-advisor and is not a rollover at all: leaving the money in the plan is a real option that rollover guides skip, because nobody in the category earns from it. The sixth is Walnut's category, placed last here because a rollover is usually a long-horizon retirement balance and keeping your own broker means nobody runs a glide path over it. On a ranking by cost the same option is first.
1. Fidelity Go
How the rollover works. Accepts direct rollovers into a traditional or Roth IRA; the custodian handles a large share of US workplace plans already
Afterwards. No advisory fee below a balance threshold, on the firm's own funds
Best for. Rolling out of a plan already administered by the same firm, where the transfer is close to internal
Where it falls short. The advisory fee begins above the threshold, so price it against the rollover balance, not zero.
2. Betterment
How the rollover works. Guided rollover process into a traditional or Roth IRA, with the paperwork largely handled for you
Afterwards. Goal-based allocation with a glide path toward a retirement date, at around 0.25%
Best for. A rollover you want de-risking automatically over the decades before you need it
Where it falls short. You pay the standard rate for tax features that do nothing inside the IRA you just created.
3. Wealthfront
How the rollover works. Accepts rollovers into traditional, Roth and SEP IRAs
Afterwards. Automated allocation plus long-horizon projections
Best for. People who want to see what the rolled-over balance compounds into before committing
Where it falls short. The tax tooling that justifies the fee is taxable-account machinery, idle in a rollover IRA.
4. Vanguard Digital Advisor
How the rollover works. Accepts rollovers into traditional and Roth IRAs
Afterwards. Very low all-in fee on broad index funds
Best for. A large rollover where the fee on the new balance is the number that matters most
Where it falls short. An account minimum, and thinner guidance through the rollover itself than the platforms above.
5. Leaving it in the plan, or moving it to a new employer's plan
How the rollover works. No rollover at all. The money stays in a workplace plan
Afterwards. Whatever the plan's fund menu and fees are, which is sometimes better than an IRA and sometimes much worse
Best for. Plans with genuinely cheap institutional funds, or anyone who values the stronger creditor protection plans carry
Where it falls short. A limited fund menu you cannot change, and one more account to keep track of. Listed because it is a real option that rollover guides rarely mention.
6. Keep your own broker (not a robo-advisor)
How the rollover works. Roll into a self-directed IRA at a broker you choose, then hold whatever you want
Afterwards. No advisory fee, because nothing is under management. You choose and maintain the allocation
Best for. Someone who wants the widest possible fund choice and will run the allocation themselves
Where it falls short. No glide path and no rebalancing over what may be a 30-year horizon, which is a long time for drift.
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The question rollover guides skip
Should you roll it over at all? Almost every page on this topic assumes yes, because almost every page is published by somewhere that would like to receive the money. The honest answer is that it depends on two specifics.
Cost. Some workplace plans hold institutional share classes cheaper than anything you can buy retail. If yours does, rolling out can raise your ongoing cost rather than lower it. Look up the plan fund fees before assuming an IRA is cheaper.
Protection. Workplace plans generally carry stronger creditor protection than IRAs, which varies by state. For most people this never matters and for some it matters a great deal.
Roll it over for the wider fund choice, for consolidating scattered old accounts, and for control. Those are good reasons. “Because that is what you do when you leave a job” is not one.
One thing to check before you close the plan account
If your workplace plan holds company stock that has appreciated, there is a specific tax treatment worth knowing about before you roll everything into an IRA, sometimes called net unrealised appreciation. Handled one way the growth can be taxed at long-term capital-gains rates; rolled into an IRA it eventually comes out as ordinary income like everything else.
Whether it helps depends on the size of the appreciation, your bracket now and later, and the plan's rules. It is genuinely case-by-case, the calculation is not obvious, and it is irreversible once the rollover is done. If you hold appreciated employer stock in the plan, that alone justifies an hour with a tax professional before initiating anything.
Everyone else can ignore this, which is most people. It is here because it is the one rollover decision that cannot be undone and is almost never mentioned.
After the rollover
Once the money is in an IRA, the criteria become the ordinary retirement ones, and the tax features most platforms advertise do nothing there. See best robo-advisors for retirement. If you rolled into a Roth, the Roth comparison covers what changes. And the general criteria are in the seven checks.
FAQ
What if my 401(k) holds appreciated company stock?
There is a specific tax treatment worth understanding before you roll it into an IRA, sometimes called net unrealised appreciation, under which the growth can potentially be taxed at capital-gains rather than ordinary-income rates. Whether it helps is case-by-case and it is irreversible once the rollover is done, so it is worth an hour with a tax professional first.
Can I roll over only part of my 401(k)?
Plans differ and many allow a partial rollover, which can be useful if part of the balance is better left where it is, for example appreciated employer stock or a fund you cannot buy retail. Ask the plan administrator, because the answer is set by the plan rather than by the receiving platform.
What is the best robo-advisor for a 401(k) rollover?
Fidelity Go if your plan is already administered by the same firm, since the transfer is close to internal and the advisory fee is zero below a balance threshold. Betterment for the most guided rollover process and a goal-based glide path afterwards. Vanguard Digital Advisor if the rollover balance is large and the ongoing fee is the number that matters most.
What is the difference between a direct and an indirect rollover?
A direct rollover sends the money from the plan straight to the new IRA provider, with nothing withheld and no deadline. An indirect rollover pays it to you first, which generally triggers mandatory federal withholding and starts a short clock to redeposit the full original amount. Ask for a direct rollover by name.
What is the 60-day rollover rule?
With an indirect rollover you have a limited window to deposit the money into the new retirement account. Miss it and the amount is generally treated as a taxable distribution, potentially with an early-withdrawal penalty on top. Because a direct rollover has no such deadline, the rule is mostly an argument for never doing an indirect one.
Why does an indirect rollover withhold money?
When a plan distributes to you rather than to another provider, it is generally required to withhold a portion for federal tax. The trap is that to complete the rollover you must deposit the full original amount, including the withheld portion you did not receive, making up the difference from other savings. Anything short is generally treated as a distribution.
Should I roll my 401(k) into an IRA at all?
Not always, and rollover guides rarely say so. Leaving it in the plan can be better if the plan has genuinely cheap institutional funds, and workplace plans generally carry stronger creditor protection than IRAs. Roll it over for the wider fund choice, consolidation, and control; keep it in the plan for cost and protection if those specifics favour it.
Can I roll a traditional 401(k) into a Roth IRA?
Yes, and it is a conversion rather than a simple move. Pre-tax money becomes after-tax money, and the converted amount is generally taxable in the year you do it. That can be deliberate and sensible, particularly in a low-income year, but it should be modelled first rather than discovered on a tax return.
Does rolling over a 401(k) trigger taxes?
A direct rollover from a traditional 401(k) to a traditional IRA generally does not. Taxes arise in two situations: converting pre-tax money to a Roth, which is taxable by design, and botching an indirect rollover so that some or all of it is treated as a distribution.
How long does a 401(k) rollover take?
Commonly a few weeks, and it depends far more on the plan administrator than on the receiving platform. Some still issue a physical cheque made out to the new provider. Open the receiving IRA first, then start the request, and expect the plan side to be the slow part.
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Walnut is informational and is not an investment adviser or a tax adviser, and nothing here is investment or tax advice. Rollover rules, withholding requirements, deadlines and creditor protections are set by law and by state and change over time; confirm the current specifics with your plan administrator and a qualified tax professional before moving anything.