What are the hidden costs when trading indices?
Verdict
- The hidden costs of index trading are spreads wider than the published minimum, overnight financing, slippage on stops, tax and payment charges; Pepperstone is our pick because it publishes most of these for UK clients.
- Pepperstone charges no commission on index spread bets, but bets held past 10 pm UK time pay an overnight fee.
- Index forwards avoid daily rolling but carry wider spreads: 3 points on the UK100 forward against 1 on the cash index at Pepperstone.
- Guaranteed stops elsewhere cost a premium or fee; Pepperstone doesn't offer them, so slippage is the cost you carry instead.
The headline cost of an index trade is the spread, but it is rarely the only one. Overnight financing, the gap between minimum and typical spreads, stops that fill late, tax and payment charges all add up, and they hit hardest on positions held for days. Here is each cost, what Pepperstone publishes about it for UK clients, and a worked example.
Pepperstone's index costs, laid out
Pepperstone Limited (FCA 684312) publishes per-index minimum spreads for each UK account and lists no commission on index CFDs or spread bets. Spread bet minimums include 0.4 points on the US500, 0.9 on the GER40 and 1 on the UK100; its Standard CFD account is wider at 0.6, 1.2 and 1.2. Accounts open from £10, with no inactivity fee.
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Six costs that don't show in the headline
| Cost | At Pepperstone UK | What to check |
|---|---|---|
| Spread above the minimum | Minimums published; averages on its index fee page (e.g. UK100 Razor average 1.5 against a minimum of 1) | Live spread at your trading hour |
| Overnight financing | Charged on spread bets held past 10 pm UK time | The daily rate on your index |
| Forwards' wider spread | UK100 and GER40 forwards from 3 points | Whether rolling or a forward is cheaper for your holding period |
| Slippage on stops | Stops can't be guaranteed | How far markets gapped at recent opens |
| Currency conversion | Accounts in GBP, USD, EUR or CHF | How profits on a US or German index are converted |
| Withdrawal charges | Table says free; costs FAQ says £15 for an international wire | Use cards or domestic transfer where possible |
A worked round trip
A £2-a-point UK100 spread bet, opened and closed at the 1-point minimum, costs £2 in spread. Open it at a quieter hour, when the spread is wider, and the cost rises with it. Hold it for three nights and you add three overnight fees on top. The same trade on Pepperstone's Standard CFD account starts from a 1.2-point minimum, and any profit is liable to capital gains tax.
Guaranteed stops: a cost others charge
If you want a fixed exit price through gaps, you pay for it at the firms that offer one. IG's guaranteed stops are free to place, with a premium only if triggered; CMC Markets charges a fee to attach one and refunds it in full if it isn't triggered; StoneX Trading charges when triggered. Pepperstone has no guaranteed stop, so your cost is the risk of slippage instead.
Tax as a cost
Pepperstone says UK spread betting profits are exempt from capital gains tax and stamp duty, while CFD profits are subject to CGT but losses can be offset against gains. It adds that tax treatment depends on individual circumstances and may change. For a profitable index trader, that difference can outweigh every other cost on this page.
Sources
Index costs as published.
Does Pepperstone charge commission on indices?
No commission on index spread bets, and its index fee schedule lists none on index CFDs. You pay the spread and overnight fees.
Why is my index spread wider than the advertised figure?
Published figures are minimums. Spreads widen outside main sessions and around news; Pepperstone's own averages are higher than its minimums.
Are index forwards cheaper to hold?
They carry wider spreads than cash indices; whether they work out cheaper depends on how long you hold. Compare both before a multi-week trade.
Index CFDs and spread bets use leverage, and losses can quickly exceed any cost saving. Pepperstone states that 73.6% of its UK retail investor accounts lose money. This page explains costs and is not investment advice.