Singapore 4D is the country's signature lottery — a four-digit game that has been a cultural fixture since 1966. It's the only lottery-style product licensed for online play in Singapore (operated exclusively by Singapore Pools under GRA license), making it the clearest legal online gambling option for Singapore residents.
This guide covers how 4D actually works, the odds and prizes, draw schedule, and the practical basics of playing online through Singapore Pools.
Singapore 4D is a four-digit lottery. You pick (or auto-generate) a four-digit number from 0000 to 9999. Twenty-three numbers are drawn each draw: 1st, 2nd, and 3rd prize winners plus 10 "Starter" and 10 "Consolation" numbers. If your number matches any of the 23 drawn, you win.
Draws take place three times per week:
Wednesday 6:30 PM SGT
Saturday 6:30 PM SGT
Sunday 6:30 PM SGT
Occasional special draws occur on public holidays.
Higher cost per unit (SGD 1 minimum), higher prizes. Your number wins if it matches any of the 23 drawn.
1st Prize: SGD 2,000 per SGD 1 unit
2nd Prize: SGD 1,000 per SGD 1 unit
3rd Prize: SGD 490 per SGD 1 unit
Starter: SGD 250 per SGD 1 unit
Consolation: SGD 60 per SGD 1 unit
Lower cost but only pays on 1st, 2nd, and 3rd prizes (no Starter or Consolation).
1st Prize: SGD 3,000 per SGD 1 unit
2nd Prize: SGD 2,000 per SGD 1 unit
3rd Prize: SGD 800 per SGD 1 unit
iBet — covers all permutations of your digits automatically
4D Roll — "locks" one digit and covers all 10 variations for the other
System Entry — for frequent players; different variants
For Big Bet:
Chance of hitting 1st/2nd/3rd: 3 in 10,000 = 0.03%
Chance of hitting any of the 23 prizes: 23 in 10,000 = 0.23%
For Small Bet:
Expected return per SGD 1 Big Bet: approximately 66 cents. House edge: ~34%. This is significantly worse than casino games (Baccarat: 1%, Sic Bo Small/Big: 2.78%) but typical of lotteries worldwide.
Singapore Pools offers online 4D via its account-holder system:
Account requirements: you must be at least 21 years old and a Singapore citizen or permanent resident.
Singapore Pools' online platform enforces responsible gambling limits:
Daily/weekly/monthly deposit caps (you set these)
Mandatory responsible-gambling messages
Session time indicators
Self-exclusion via NCPG
Official sources only:
singaporepools.com.sg — authoritative draw results
Singapore Pools mobile app
In-outlet displays at any Singapore Pools outlet
Beware unofficial "4D prediction" sites — most are scams or malware. 4D draws are random; past results do not predict future ones.
Honestly, no. A ~34% house edge means for every SGD 1 bet, you expect to lose ~34 cents long-term. That's worse than casino games by a wide margin.
However, 4D is:
Legal for Singapore residents (unlike offshore casinos)
Low per-unit cost (SGD 1)
Culturally significant
Supports Singapore's tote board and community causes (Singapore Pools returns profits to TOTE Board for public funding)
If you view 4D as entertainment with a small entry fee — not as an investment or income strategy — it's among the most legally and socially acceptable gambling formats in Singapore.
"Dream numbers have higher luck": Pure superstition. Every number has identical odds.
"Hot numbers stay hot": False. Each draw is independent.
"Birthdate numbers win more": No. The draw doesn't know your birthday.
"Statistics can predict next draws": Past frequency has no bearing on future probability.
Yes, exclusively through Singapore Pools. You must be 21+, a Singapore citizen or PR, with a verified account.
Singapore Pools enforces responsible-gambling limits; typical maximums are set per account rather than per bet.
Casual lottery winnings are not taxed by IRAS.
Prizes under SGD 5,000 are paid via your Singapore Pools account. Prizes above are claimed at Singapore Pools main office with identification.
Only Singapore citizens and permanent residents can register online Singapore Pools accounts. Foreigners can purchase tickets in person at outlets.
Online bets are stored in your Singapore Pools account — no physical ticket to lose. In-person bets require the physical ticket to claim.
4D is Singapore's only fully-legal online gambling product for residents. The math is lottery math — bad in absolute terms but acceptable if you treat it as entertainment. For Singapore players specifically interested in staying within the legal framework, 4D through Singapore Pools is the default option.
For a fuller picture of what is and isn't legal for Singapore residents, see our legality guide. For a comparison between Singapore Pools products and offshore casino alternatives, see Singapore Pools Online vs Offshore Casinos.
18+ only. Gambling can be addictive. Under Singapore law, gambling through operators not licensed by the GRA is unlawful for residents. Call the NCPG helpline at 1800-6-668-668 for confidential support.