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The most useful thing you can report is a calculation that disagrees with a settlement you actually received. Include the bet type, the prices, the stake and what the bookmaker paid, and it can be checked against the engine directly. Settlement conventions vary in small ways between firms, so a discrepancy is not always an error here — but it is always worth knowing about, and a genuine bug gets fixed rather than argued with.

Corrections to the written guides are equally welcome. Betting rules change, place terms get revised, and a page that was accurate when it was written can quietly stop being accurate. If something on the site is out of date, saying so is more useful than working around it.

Requests for bet types that are not yet covered are worth sending too. The calculators are generated from a single engine, so adding a variant is usually a small job once it is clear there is real demand for it.

Betting Tools does not accept bets, hold customer funds, or operate any form of gambling. It is an information and calculation site, so it holds no licence from the Gambling Commission and does not need one. If you have a dispute about a settled bet, a withdrawal or an account restriction, that is a matter for the operator holding the bet and, if it cannot be resolved with them, for their alternative dispute resolution provider.

Nobody here can access your betting account, reverse a settlement, or intervene with an operator on your behalf. If gambling has stopped being something you enjoy, the support page lists free and confidential help, including the National Gambling Helpline on 0808 8020 133.

If a calculator here disagrees with a real settlement, the most useful report includes five things: the bet type, every price in the order you took them, the unit stake, whether it was each way and at what place terms, and what the bookmaker actually paid. With those, the discrepancy can be reproduced exactly and traced to either a genuine bug or a difference in settlement convention.

The copy result link button on every calculator makes this easier than it sounds. It encodes the whole state of the calculator into the address, so sending that link communicates every input at once without you having to write them out or send a screenshot.

Differences are not always errors. Firms round individual lines slightly differently, apply bonus terms in their own way, and occasionally settle awkward cases such as a combined Rule 4 and dead heat in a different order. A penny of variance on a large multiple is normal; a pound is worth investigating.

This is a small operation rather than a support desk, so replies are not instant and there is no ticketing system behind the address. Reports of genuine calculation errors are treated as the priority, because a wrong figure on a maths site undermines everything else on it, and those are usually looked at within a few days.

General questions about how a bet type works are answered better by the relevant calculator page than by an email, because the pages carry worked examples generated from the same engine that settles the bet. If a page does not answer your question clearly, that is itself worth reporting — it usually means the explanation needs improving rather than that the question was unusual.

Commercial enquiries, link requests and content offers are not something this site takes up. There is no guest posting, no sponsored content and no paid placement in the comparison table, and that position is not negotiable regardless of how the offer is framed. The comparison table stays independent because nothing has been sold in it, and the moment that changes it stops being worth reading.