The first four is a bet type where you must select runners to finish, 1st, 2nd, 3rd and 4th in correct order. It is very similar to a trifecta except that you must correctly select the first four placegetters and not just the first three.
The first four is very difficult to select meaning that the winning dividends are often very high.
A box first four is where you select a number of runners to fill the first four places. They can fill those places in any order.
Where the bettor can select a percentage of the first four rather than pay for a full unit. In return, if successful they will receive the same percentage portion of the winning dividend.
The orange cells highlight the correct first four placegetters, the ticks highlight the selections made by the bettor before the race. The bet cost $75 to put on based on multiplying the number of selections taken in each leg 1 x 5 x 5 x 3 = 75. The payout of $421 is relatively small for a first four bet. The dividend varies depending on the odds of the first four placegetters.
All of the leading Australian bookmakers now offer first four betting. Be aware that the payouts for some first four bets can be well over six figures; some bookmakers cap their payouts at $25,000 or $50,000. The TAB has no limit on its maximum payouts.