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  • Jon M. Spangler
  • Insights

Picture the first real market drop of your retirement. Your robo-advisor does exactly what it was built to do. It rebalances back to your target, maybe harvests a tax loss, and sends a clean notification to your phone. It doesn't ask whether this year’s Roth conversion plan needs a second look, or whether next month's withdrawal should come from your taxable account instead of your IRA, because it wasn't built to do that. 

Robo-advisors are good at what they do, and for a lot of people they're enough. But retirement asks a different set of questions than the ones an algorithm was designed to answer. Below are six decisions automated platforms don't coordinate, and, just as honestly, when a robo-advisor really is all you need. 

Can a robo-advisor handle your retirement? The short answer 

A robo-advisor is a low-cost tool for automated investing, and for straightforward accumulation it often works well. It isn't built to coordinate the interlocking decisions of retirement: withdrawal sequencing, Social Security timing, Roth conversions, and tax-aware drawdown. Those are the areas where a human advisor tends to add the most value. 

Investing is something software does well. Retirement income is a coordination problem, and that's where the gaps show up. 

What a robo-advisor does well (the fair part) 

Give the tools their due. A typical robo-advisor charges roughly 0.25% to 0.50% of your balance a year, asks for little or no minimum to open an account, and handles the mechanical work of investing without complaint. ¹ It builds a diversified portfolio, rebalances on a schedule, and can harvest tax losses automatically. It doesn't panic in a downturn, and it won't bill you for a phone call. A human advisor, by contrast, more often charges around 1% a year, sometimes less on larger balances. ² If your situation is a single account growing toward a goal that's still years away, the low-cost option is a lot of value for the price. 

Six things a robo-advisor can't do for your retirement 

Moving from saving to spending changes the questions. In the accumulation years, most decisions are variations on “keep investing.” In retirement, the decisions start interacting. A withdrawal here changes your tax bill there, which changes what's smart to do with Social Security, which changes future years' Medicare premiums. ⁴ 

1. Coordinate which account you draw from 

In retirement, where your income comes from matters as much as how much. Drawing from a taxable account, a traditional IRA, and a Roth in the right order can change how long your money lasts and how much of it goes to taxes. ⁴ A robo-advisor manages each account to its target allocation, but it generally doesn't sequence withdrawals across all of them with your full tax picture in mind. It's a judgment call you make fresh each year. 

2. Time Social Security with the rest of your plan 

Claiming at 62, 67, or 70 is about more than the size of the benefit. It interacts with how much you draw from your portfolio, the tax bracket you land in, and how long you expect to need the income. ⁴ The right answer depends on health, other income, and cash-flow needs that vary household to household. An app doesn't sit across the table and weigh those with you. Read more about Social Security Timing here.

3. Size Roth conversions around the thresholds that matter 

Converting part of a traditional IRA to a Roth can lower lifetime taxes, but only if it's sized carefully. Convert too much in one year and you can push into a higher bracket or trip a Medicare premium surcharge (IRMAA).⁴ Getting it right means looking at the whole year's income and deciding how much room you have, and that isn't what a robo-advisor was built to do. (The specific bracket and IRMAA figures change year to year, so any real plan needs current numbers.) 

4. Adjust when life doesn't go to plan 

Plans meet reality: a health event, a market drop in the first year of retirement, an unexpected expense. Recent MIT Sloan research on automated and AI-generated financial advice found it “struggles to adjust spending after income shocks.”³ A person can rethink the plan when circumstances change; an algorithm keeps running the one it already had. 

5. Manage the drawdown itself 

A bad market in the first years of retirement, combined with withdrawals, can do lasting damage. Advisors call it sequence-of-returns risk. The same MIT Sloan analysis found automated advice tends to “passively shift portfolios rather than actively rebalancing them,” and to recommend “too little gradual drawdown in retirement.”³ Turning a portfolio into a steady paycheck is more hands-on than most tools are built for.  

6. Talk you out of a decision you'll regret 

The most expensive retirement mistakes are often emotional: selling into a downturn, or freezing when a plan needs to change. Vanguard estimates that behavioral coaching through those moments can be worth on the order of 1.5% a year, though it's uneven and shows up mostly in volatile markets.⁵ That figure is an illustrative industry estimate, not a Cambridge result. A robo-advisor won't call you when the headlines are bad. A person might. 

Is your situation “robo-simple” or “coordination-complex”? 

A quick gut check. The more of these that describe you, the more the coordination above starts to matter: 

  • You have several types of accounts: taxable, traditional IRA, Roth, maybe an old 401(k). 
  • A meaningful share of your savings is pre-tax, so future withdrawals will be taxed. 
  • You're within a few years of the Social Security decision. 
  • You have a pension, business interest, or other income to fit around. 
  • You care about tax efficiency, charitable giving, or what you leave to family. 

If most of that sounds like you, the question shifts from robo-or-human to who's coordinating the pieces. 

A quick example 

Imagine Bill and Susan, 62 and 60, near Omaha. (They're made up, but their situation is common.) They have about $1.8 million spread across Bill's 401(k), a Roth IRA, and a joint taxable account, plus a small pension from an earlier employer. A robo-advisor could invest all three accounts well and keep them balanced. 

What it wouldn't do is decide which account they should spend from first, how the pension and a future Social Security claim change that order, or whether to convert part of the 401(k) to Roth in the lower-income years before required withdrawals begin. Those choices interact, and none of it shows up on a dashboard. 

When a robo-advisor is actually enough 

None of this is an argument against robo-advisors. If your finances are relatively simple (one or two accounts, still years from retirement, and you're comfortable making the big decisions yourself), a low-cost automated platform is a reasonable, even smart, choice. Plenty of capable investors don't need more than that. 

The case for a human advisor gets stronger as the pieces multiply and the decisions start depending on one another. Complexity is what drives that, not the size of the balance. 

How Cambridge approaches the coordination problem: the A.I.M. System 

The six gaps above are all versions of the same coordination problem, and a planning process is what handles it. At Cambridge Advisors, ours is the A.I.M. System: Assess, Implement, Monitor.  

Assess 

Before anything moves, we map the whole picture: your accounts, income sources, tax situation, Social Security options, and what you actually want the money to do. This is where we answer the sequencing, timing, and conversion questions from this article for your situation rather than a generic one. 

Implement 

We build the plan and the portfolio around those answers. Cambridge doesn't use model portfolios; we build each portfolio for the household it belongs to, because a 62-year-old with a pension and a 62-year-old without one don't have the same income problem, even with the same balance. 

Monitor 

Retirement isn't set-and-forget. We revisit the plan as markets move and life changes, which is the year-to-year adjustment an automated platform tends to miss. We keep the number of clients per advisor deliberately limited so there's room to think about your situation specifically rather than apply the same rules to everyone. No plan removes market risk or guarantees an outcome; the aim is coordination and fewer avoidable mistakes. 

Key takeaways 

  • Robo-advisors are good, low-cost tools for straightforward investing. 
  • The hard part of retirement is coordination. 
  • The gaps show up in sequencing withdrawals, timing Social Security, sizing Roth conversions, adjusting to surprises, managing the drawdown, and staying steady in downturns. 
  • A planning process like Cambridge's A.I.M. System coordinates those pieces: assess the whole picture, build around it, and adjust over time. 
  • The more account types and interacting decisions you have, the more that coordination matters. If you're not sure which camp you're in, that's itself worth a conversation. 

Frequently asked questions 

Are robo-advisors good for retirement? 

They can be, for simple situations. A robo-advisor invests and rebalances at low cost. It's less suited to coordinating withdrawals, taxes, and Social Security once you're drawing income, which are the decisions that define the retirement phase. 

Can a robo-advisor do tax planning or Roth conversions? 

Most handle narrow tasks like tax-loss harvesting. Sizing a Roth conversion around your tax bracket and Medicare thresholds is a yearly judgment call that automated platforms generally don't make for you. 

Do robo-advisors help with Social Security timing? 

Generally, no. Claiming age interacts with your withdrawals, taxes, health, and longevity. Those are factors a person weighs with you rather than something an app settles on its own. 

Is a human financial advisor worth it if I already use a robo-advisor? 

It depends on your complexity. With multiple account types and interacting decisions ahead, the coordination a human provides can matter more than the difference in fees. If your situation is simple, a robo may be all you need. 

When should I switch from a robo-advisor to a financial advisor? 

A common trigger is the approach of retirement, when the questions shift from “keep investing” to “how do I turn this into income, tax-efficiently, for decades.” That's when coordination starts to outweigh cost. 

 

A fair question to talk through 

Cambridge Advisors is a fee-only fiduciary firm in Omaha, Nebraska, focused on retirement income planning. If you're weighing whether your situation has outgrown a do-it-yourself or automated approach, that's worth a conversation. Our discovery meetings are complimentary and carry no obligation. 

Schedule a complimentary discovery meeting 

 

Disclosures

This article is for educational purposes only and is not investment, tax, or legal advice. It does not consider your individual circumstances. Consult a qualified professional before acting on any information here. Cambridge Advisors Inc. is a fee-only registered investment adviser. Registration does not imply a certain level of skill or training. Advisory services are offered only under a written agreement. Past performance does not guarantee future results. All investing involves risk, including possible loss of principal. Examples are hypothetical and for illustration only. Data cited from third-party sources is believed reliable but is not guaranteed. Figures are estimates as of the access date shown and may change. Tax rules, contribution limits, and government program figures change. Amounts cited are current as of the publication date shown; verify current figures before making decisions. Cambridge Advisors Inc. does not provide tax or legal advice and is not a tax advisor or accountant. Any tax discussion here is general and educational; consult a qualified tax professional about your specific situation before acting.

 

Sources & Endnotes

1. Robo-advisor fees and features: NerdWallet, “Robo-Advisors vs. Financial Advisors: How to Choose”; Morningstar 2025 robo-advisor report (median management fee ~0.25%). Accessed 08/03/26.

2. Typical human-advisor fee (~1% AUM, often scaling down above $1M): NerdWallet; U.S. News & World Report; advisor-fee guides. Accessed 08/03/26.

3. MIT Sloan School of Management, T. Choukhmane et al., “AI Financial Advice: Supply, Demand, and Life Cycle Implications” (working paper), May 21, 2026. Accessed 08/03/26.

4. Interaction of withdrawal sequencing, Social Security timing, and Roth conversions/IRMAA: The Motley Fool, “How to Coordinate Social Security, RMDs, and Roth Conversions” (July 2026); T. Rowe Price, tax-efficient retirement-withdrawal guidance. Accessed 08/03/26.

5. Vanguard, “Putting a Value on Your Value: Quantifying Vanguard Advisor's Alpha” — behavioral-coaching value estimated ~1.5%/yr; described as potential and irregular. Illustrative, not a Cambridge result. Accessed 08/03/26.