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Tools
Three tools sit here: an acca calculator, a deposit limit planner and a note on betting duty. Each shows its formulas and a worked example on the page, so you can follow the arithmetic without the tool. Nothing you type is stored or sent, and no tool recommends a stake or a limit.
Editorial team · checked
Acca calculator
The acca calculator takes a stake in euro and 2 to 15 selections, in fractional odds (5/1) or decimal odds (6.00).
- Decimal price: d = 1 + a ÷ b, for fractional odds a/b.
- Combined odds = the product of all decimal prices.
- Return = stake × combined odds. Profit = return − stake.
- Chance of one selection = 1 ÷ d.
It leaves out void bets, dead heats, Rule 4 and bonuses.
Worked example: a €7.50 stake on 6/4, 11/10 and 1/2. The decimal prices are 2.50, 2.10 and 1.50.
Combined odds are 7.875. Return is €59.06 and profit €51.56. The implied chance of all three winning is 12.7%.
In short: multiply the prices, then multiply by the stake.
Deposit limit planner
The planner converts a limit and its period into daily, weekly and monthly amounts. You can compare the result with a monthly budget you type in.
- Weekly = daily × 7.
- Monthly = weekly × 52 ÷ 12.
- Share of budget = monthly limit ÷ monthly budget.
Worked example: a €40 weekly limit is €5.71 a day and €173.33 a month. Against a €200 monthly budget, that is 86.7%.
It does not recommend an amount. Related pages: limits, breaks and blocks and responsible gambling.
In short: the planner converts; you decide the amount.
Betting duty note
The betting duty note shows who pays betting duty on each type of bet. Duty is charged on operators, not on punters.
| Type of bet | Rate | Who pays |
|---|---|---|
| Remote bets | 2% | Operator |
| Commission of a betting intermediary | 25% | Intermediary |
| On-course and tote bets | Nil | Not checked |
Read the current rates on the Revenue page before you rely on them. This site makes no statement on tax on players' winnings.
In short: duty rates are recorded; tax on winnings is not confirmed.
How we checked
We recomputed every worked example by hand on 7 November 2026. Duty rates come from the Revenue page as recorded in our brief and are Not re-read in this build.
In short: sums rechecked; duty rates still to be re-read.
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