Comparison · Investing · 2026/27
Robo-Advisor vs DIY Investing UK 2026/27
A robo-advisor automates fund selection and rebalancing for an extra fee. DIY investing costs less but requires you to choose funds and rebalance yourself. This 2026/27 guide compares total costs with a worked GBP 10,000 example.
Key facts -- 2026/27
- • Typical robo-advisor management fee: ~0.25-0.75%/year
- • Plus underlying fund charges: ~0.1-0.3%/year
- • Typical total DIY cost: ~0.1-0.3%/year
- • Rebalancing: automatic (robo) vs manual (DIY)
- • Both: available within ISA, SIPP, LISA wrappers
- • 20-30 year fee drag: 0.5% extra can meaningfully reduce final value
What the Extra Fee Buys You
A robo-advisor's management fee covers portfolio construction based on your risk profile, ongoing automatic rebalancing, and typically some guidance around allocation as your goals change -- effectively outsourcing the decisions a DIY investor must make themselves.
DIY investing removes that fee layer but shifts the responsibility for fund selection, initial allocation and periodic rebalancing onto you -- a manageable task for a simple portfolio, but one that requires discipline to keep up over years or decades.
Worked Example: GBP 10,000 Invested for 20 Years
| Approach | Total annual cost | Illustrative cost over 20 years* |
|---|---|---|
| Robo-advisor | ~0.75% | Meaningfully higher drag |
| DIY (low-cost index funds) | ~0.2% | Lower drag, more retained growth |
*Illustrative only -- actual outcomes depend on returns achieved, discipline maintaining allocation, and specific provider charges. Use the compound interest calculator to model the fee-drag effect over your own timeframe.
Side-by-Side Comparison
| Factor | Robo-advisor | DIY investing |
|---|---|---|
| Total cost | Higher | Lower |
| Rebalancing | Automatic | Manual, self-disciplined |
| Fund selection effort | None required | Required |
| Best for | Beginners, hands-off investors | Cost-conscious, engaged investors |