The Rules for Going Gin
Going Gin is the highest-value way to end a Gin Rummy hand. When you form melds with all 10 cards in your hand and have zero deadwood, you can declare Gin on your turn — earning a bonus and preventing your opponent from laying off any cards.
What Qualifies as Gin
To go Gin, you must meet both of these conditions on your turn:
- You have just drawn a card (from the stock pile or discard pile).
- After discarding one card, all remaining 10 cards form complete, valid melds with zero deadwood.
Every single card must be accounted for in a meld. Even one unmatched card with a value of 1 (an Ace) prevents a Gin declaration — it must be part of a valid set or run.
How to Declare Gin: Step by Step
Step 1: Draw
Take a card as normal on your turn — either from the stock pile or the top of the discard pile.
Step 2: Discard Face-Up
Choose one card to discard and place it face-up on the discard pile. (This is different from a knock, where the final discard is face-down.) After this discard, all remaining 10 cards in your hand must form valid melds.
Step 3: Declare “Gin”
Say “Gin” to signal that you are going Gin. Then lay all 10 cards face-up on the table, organized into their melds for easy verification.
Step 4: Opponent Reveals Hand — No Laying Off
Your opponent reveals their hand but may not lay off any cards onto your melds. Every card they hold counts as deadwood in full.
Step 5: Score
Count your opponent’s total deadwood. Your score for the hand:
Gin Score = Opponent’s deadwood + 25 (Gin bonus)
Gin Scoring Examples
Example 1
- You go Gin.
- Opponent holds: K♠ (10) + Q♥ (10) + 6♦ (6) + 2♣ (2) = 28 deadwood.
- You score: 28 + 25 = 53 points.
Example 2
- You go Gin.
- Opponent holds: A♠ (1) + 3♥ (3) = 4 deadwood (they were close themselves).
- You score: 4 + 25 = 29 points.
Even against a well-prepared opponent, the Gin bonus always adds 25 guaranteed points on top of their deadwood.
Gin vs. Knock: The Rules Difference
| Rule | Knock | Gin |
|---|---|---|
| Deadwood required | ≤10 points | Exactly 0 |
| Final discard | Face-down | Face-up |
| Verbal declaration | Not required | “Gin” (or equivalent) |
| Opponent lays off? | Yes | No |
| Bonus points | None | +25 |
| Undercut possible? | Yes | No |
Big Gin: All 11 Cards Melded
Big Gin is a variant rule (not part of standard Gin Rummy) where a player draws a card and all 11 cards — the 10 in hand plus the drawn card — form complete melds without any need to discard.
When Big Gin is in use:
- No discard is made — the player lays all 11 cards immediately.
- The score is: Opponent’s deadwood + 31 (instead of 25).
- Big Gin must be agreed upon before the game; it is not a standard rule.
See Big Gin for the complete rules.
Gin in Rule Variations
Oklahoma Gin
The Gin bonus remains 25 points regardless of the upcard value. However, in some Oklahoma Gin rule sets, all points scored in a hand are doubled when the upcard is a spade. A Gin hand with an opponent holding 30 deadwood would then score (30 + 25) × 2 = 110 points for the hand.
When the upcard is an Ace in Oklahoma Gin, the knock limit becomes 1, effectively requiring Gin to end the hand. Players must build zero-deadwood hands to win.
Straight Gin
In Straight Gin, Gin is the only way to end a hand — knocking is prohibited. This makes the Gin rules even more central to gameplay, and every decision is oriented toward reaching zero deadwood.
Common Questions About Going Gin
Can I go Gin if the stock pile is almost empty?
Yes. There is no restriction on going Gin based on the stock pile size. If you can form Gin melds on your turn, you may declare Gin at any point in the hand.
Does my opponent score anything when I go Gin?
No. The player who goes Gin scores all the points for that hand. The opponent scores nothing.
What if I accidentally discard face-down when going Gin?
A face-down discard signals a knock, not Gin. You cannot then claim Gin. If you discard face-down but meant to go Gin, the hand proceeds as a knock — which means your opponent can lay off cards. Be deliberate with your discard signal.
Can I go Gin on the very first turn?
It is theoretically possible but extraordinarily rare. You would need to be dealt a hand where drawing the upcard or the first stock card completes all 10 melds with zero deadwood. In practice, this is nearly impossible.
Related Pages
- Knocking Rules — the alternative way to end a hand
- Undercut Rules — only possible after a knock, not Gin
- Laying Off Rules — why lay-off is not allowed after Gin
- Gin Rummy Scoring — how Gin points work in the full scoring system
- Straight Gin — a variation where Gin is the only way to win