Digit contracts, explained

Digit contracts settle on the last digit of a tick's price — a number from 0 to 9. They're the simplest thing to trade on Deriv and the easiest to automate, because the odds are exact and knowable rather than a matter of opinion. Here they all are, with the numbers.

How the last digit works

Take a price like 1234.56. The last digit is 6. On Deriv's volatility indices that digit is drawn independently and uniformly from 0–9, so each digit turns up one time in ten across a big enough sample, and the previous tick tells you nothing about the next.

That's unusually good news for a bot builder. You don't have to estimate your win rate — you can calculate it. Digit Over 1 wins whenever the digit is 2 through 9: eight outcomes out of ten, exactly 80%, permanently.

Every digit contract, with real numbers

Contract	Wins when	Win probability	Typical payout	Break-even payout	Cost to you
Digit Even / Odd	Digit is even (or odd)	50%	1.95	2.00	2.5%
Digit Differs	Digit is not your pick	90%	1.06	1.11	4.6%
Digit Over 1	Digit is 2–9	80%	1.19	1.25	4.8%
Digit Under 8	Digit is 0–7	80%	1.19	1.25	4.8%
Digit Over 2	Digit is 3–9	70%	1.36	1.43	4.8%
Digit Under 7	Digit is 0–6	70%	1.36	1.43	4.8%
Digit Matches	Digit is exactly your pick	10%	9.50	10.00	5.0%
Digit Over 3	Digit is 4–9	60%	1.58	1.67	5.2%
Digit Under 6	Digit is 0–5	60%	1.58	1.67	5.2%

Payouts move a little by symbol, duration and time of day, so treat these as typical rather than fixed — and check the live quote before you commit. Break-even payout is just 1 ÷ win probability: the payout that would make the contract a fair coin.

Read that table again

Even/Odd costs roughly half what everything else does. At 2.5% against 4.6–5.2% on the rest, your choice of contract moves your long-run outcome more than the staking strategy you've probably spent far longer agonising over. If you're running a bot for volume, this is the single most valuable line on the page.

The second thing worth noticing: a high win rate is not an edge. Digit Differs wins 90% of the time and still costs you 4.6%, because the payout shrinks to match. Bots that look flawless because they "win 9 out of 10" are simply trading a contract that wins 9 out of 10.

Which suit automated trading?

Even/Odd — cheapest edge and a clean 50/50, which makes it the natural fit for Martingale and 1-3-2-6. It's what Speedbot runs out of the box. Full Even/Odd guide →
Over/Under — a high win rate suits streak strategies like Reverse D'Alembert, where you want frequent wins to climb on. All four Pro AI bots trade these. Full Over/Under guide →
Matches — wins once in ten with a big payout. Long dry spells are the norm, so any recovery staking on top escalates hard. Approach with care.
Differs — the mirror of Matches. Frequent small wins, occasional sharp losses.

Can you predict the next digit?

No, and this is where most money is lost in this corner of the market. The digits are independent and uniform, so a digit that hasn't appeared for 40 ticks is exactly as likely as any other on the next tick. Every "digit prediction" bot sold anywhere rests on that misunderstanding.

You don't have to take our word for it. The backtester pulls 1,000 live ticks and runs a chi-square uniformity test plus a lag-1 autocorrelation check, right in the page. The digit analysis tools let you watch the same thing happen in real time across every market at once. Verify it yourself in about a minute — and then never pay for a digit-prediction bot again.

Trade them with a bot

Every contract above is available in the bot builder and in the quick strategies. Several of the free bots are built on digit contracts out of the box, so the quickest way to see one working is to load it and run it on demo.

Build and run it yourself

Binary Pro is free to use, runs in the browser, and works on a Deriv demo account.

Open the bot builder