From your first bet to your bookmaker: horse racing betting in the UK

Racing in Britain splits into two codes. Flat racing is run without obstacles over distances from five furlongs (a furlong is an eighth of a mile, about 201 metres) to beyond two miles. The turf season is at its busiest in spring and summer, while all-weather tracks with synthetic surfaces stage flat racing all year round. Flat horses often race young, and speed, the draw and the ground count for a great deal.

Jump racing, also called National Hunt racing, is run over hurdles or steeplechase fences at distances from about two miles upwards. The main jumps season runs through autumn and winter into spring, building towards the Cheltenham Festival in March and the Grand National at Aintree in April. Jumpers tend to be older, stamina matters more, and a fall or an unseated rider is always possible, which is one reason jump races can produce surprising results.

Horse racing betting starts with the racecard. Every race has one, listing the declared runners with their weights, riders, recent form and, on the flat, the draw. Bookmakers price each runner, and those prices move during the day as money comes in. When you place a single, you can either take the price on offer at that moment or bet at the starting price (SP), the official price when the race begins.

If your horse wins, the return is your stake multiplied by the odds, plus the stake back. A £10 win bet at 5/2 returns £35: £25 profit and the £10 stake. In decimal terms 5/2 is 3.50, so the return is simply the stake multiplied by 3.50. Our guide to how betting odds work covers the conversions and what a price says about a horse's chance.

Late withdrawals also affect settlement. If a runner is taken out after the market has formed, a Rule 4 deduction may be applied to winning bets struck at a price. The size of the deduction depends on the price of the withdrawn horse: the shorter it was, the bigger the deduction.

You do not need complicated bets to enjoy racing. Most punters stick to a handful of types, and each one is easy to follow once you know what it covers.

Each-way is the bet most worth understanding, because the place part is paid at a fraction of the win odds and the number of places depends on the size of the field and the type of race. Our each-way calculator works out both parts of the bet for you. Forecasts and tricasts pay well when they come in, but they are much harder to land.

Prices matter, but in horse racing betting the terms around the price often matter just as much. These are the four we look at most closely:

• Best Odds Guaranteed (BOG). If you take a price and the starting price turns out bigger, a winning bet is paid at the SP. It usually covers UK and Irish racing, and terms such as qualifying times and maximum payouts apply.
• Extra places. On big handicaps and festival races, many bookmakers pay one or more places beyond the standard terms. An extra place only affects each-way bets, but in a large field it can turn a losing bet into one that returns something.
• Live streaming. Major bookmakers stream UK and Irish racing to customers who have a funded account or have placed a bet. Check what qualifies before the race rather than during it.
• Non-runner no bet (NRNB). In ante-post markets your stake is normally lost if the horse does not run. With NRNB it is returned instead. Bookmakers tend to offer it in the run-up to the big festivals.

Two pieces of information explain more results than anything else: recent form and the state of the ground. Form figures on a racecard are read with the most recent run on the right, and the letters among them show when a horse fell, unseated its rider or was pulled up. Our form guide decodes them and explains what else on a card deserves attention, from course and distance wins to the draw.

The going describes the ground, from heavy to firm on turf. Some horses need soft ground, others want it fast, and a change in the going on the morning of a race can reshape the market and cause non-runners. Reading form and going together is the simplest way to judge whether a horse's last run is a fair guide to its next one.

A few fixtures attract far more betting than the rest of the calendar. Over jumps, the Cheltenham Festival runs over four days in March, with a championship race at the centre of each day and the Gold Cup on the Friday. A few weeks later, the Grand National at Aintree draws in people who might not place another bet all year, partly because its big field makes it such an open race.

On the flat, Royal Ascot in June and the Derby at Epsom are the highlights of the summer. At all of these meetings bookmakers compete hard for custom, so extra places and NRNB terms are common. That makes the big days a sensible time to compare accounts carefully rather than staying with the first one you opened.

Horse racing betting is entertainment first, and racing is a sport full of variables, and even a carefully read card leaves plenty to chance. Betting on UK horse racing should stay affordable, so treat any stake as the cost of an afternoon's entertainment, not as an investment. Set a deposit limit when you open an account, decide on a budget for a meeting before the first race, and resist the urge to chase losses in the last.

If betting stops being enjoyable, take a break. UK-licensed bookmakers offer time-outs and self-exclusion, and GamStop lets you exclude yourself from all of them at once. Free, confidential support is available from GambleAware, linked in the footer of every page.