As of 13 August 2026, AI can only partly compare UK investment platform fees.
This still needs a person who signs their name to it.
Can you do it?
5 minutesto a draft.
30 minutesto something you’d act on.
Cost, all in£0
Skill neededchat-fluent
Who has to check ityou
What the alternative costsThe supplied data gives no price for a human fee-comparison service, so no pounds comparison with that alternative is available.
If this goes wrong: an omitted charge or wrong assumption makes one platform look cheaper and you pay more than expected over time.
What to actually do
Hand it to a person
The route this page recommends
A person who owns the outcome does this end to end, worth it when the failure is dear.
Use a tool built for this
Second choiceDo it yourself
The distant thirdA chat interface, chat-fluent skill, and roughly 30 minutes until you can act on the result.
How to actually do it
- Choose the UK platforms and account type you want to compare, such as an ISA, SIPP or general investment account.
- Open each provider's current fee page and tariff document, then copy the relevant text or tables with the source URL and the stated date into one document.
- Gather your own comparison assumptions: portfolio value, monthly contribution, number of purchases or sales, holdings, fund types and any overseas dealing or currency needs.
- Paste the fee material and assumptions into the prompt, replacing each bracketed slot and keeping provider names beside their fees.
- Ask the model to produce the fee-category table, scenario calculations and needs-checking list specified in the prompt.
- Compare every reported fee and rule against the original provider pages, correcting the table where the source does not support the model's wording or calculation.
- Recalculate any material totals yourself with a calculator, then contact the provider for any conditional, unclear or recently changed charge before choosing a platform.
Prompt
Compare the UK investment platform fees in the source material below. Do not invent missing prices, rules or assumptions, and do not recommend a platform or investment. First list every fee category you can identify, including charges that depend on account type, portfolio size, transactions, funds, foreign exchange or transfers. Then create a plain comparison table using only the supplied information. Calculate the total cost for these scenarios if the source material supports the calculation: [portfolio value], [monthly contribution], [number of purchases or sales per year], [fund or share holdings], [account type], and [currency or overseas dealing needs]. Show the formula and each input for every calculation. Mark any missing, conditional, outdated or ambiguous information as 'needs checking'. Separate platform charges from fund or investment costs. End with a checklist of the exact points I must confirm on each provider's current fee page or tariff before relying on the comparison. Treat the information as current only if the source states it is current as at 2026-08-13. Source material: [paste the fee pages, tariff documents or tables here].
Open it prefilled in ChatGPT or Claude, or copy it into Gemini, which takes no prefill link.
What it gets wrong
- AI cannot obtain a complete, current fee schedule unless you give it reliable source material or a tool with appropriate access.
- AI cannot resolve ambiguous wording about conditional charges without checking the provider or understanding your exact account and dealing pattern.
- AI can omit charges outside the pasted documents, including costs attached to particular investments, currencies or transfers.
- AI compares stated costs but does not decide whether a platform's service, investment range or features suit your circumstances.
What caps this at PARTLY: verification cost, judgement under ambiguity and stakes of error.
How we scored this
Five axes, each scored nought to two by hand: ten means AI carries the task cleanly, and the thresholds that turn a total into YES, PARTLY or NO are published in the methodology. Each axis name links to its definition.
| Axis | Score (0–2) |
|---|---|
| Output | 2 |
| Inputs | 1 |
| Verification | 1 |
| Liability | 1 |
| Effort delta | 2 |
| Total | 7 / 10 |
The methodology and its thresholds are published in full.
FAQ
- Can ChatGPT compare investment platform fees?
- Partly. It can organise fee schedules and calculate scenarios from information you supply, but you must check the result against each provider's current tariff and confirm unclear charges.
- What information do I need to compare investment platform fees?
- You need the account type, portfolio value, contributions, expected purchases and sales, holdings, and any overseas or currency requirements. You also need each platform's current fee pages or tariff documents.
- Can AI tell me which investment platform is cheapest?
- It can identify the lowest stated cost for the assumptions you provide, but that may change with your portfolio, trading pattern, investments or account type. A cheapest result is not a personal recommendation, and this is not professional advice.
- How do I check an AI comparison of investment platform fees?
- Compare every fee and condition with the provider's current fee page or tariff, then recalculate the important totals yourself. Ask the platform directly about any charge the document describes conditionally or that the model marks as needing checking.
Nearby answers
- Can AI help me assess my investment risk level?PARTLY
- Can AI calculate compound interest on my savings?YES
- Can AI calculate how much interest I will earn from an AER?YES
- Can AI check whether I owe UK Capital Gains Tax on my investments?PARTLY
- Can AI check whether my UK savings are covered by FSCS protection?PARTLY
- Can AI check whether a Lifetime ISA suits me?PARTLY
Assessed by gpt-5.6-luna (gpt-5.6-luna) on 2026-08-13, second-checked by an independent model. Wrong somewhere? Email [email protected] and it gets re-checked.
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