How Does Initiative Work in D&D? 2024 Rules Guide

In Dungeons & Dragons, initiative determines the order in which participants act during combat. Under the 2024 Basic Rules, each participant normally rolls initiative with a Dexterity check when combat begins; the DM rolls for monsters. The totals are ranked from highest to lowest, and that order is used for turns during the encounter. The rules also describe an initiative score that a DM might use instead of rolling. That score is not a universal “default initiative” that replaces the normal procedure in every situation.

What initiative means

Initiative is the turn order for a combat encounter. It helps a group coordinate when several characters, creatures, and opponents act in the same round. A round represents about six seconds in the game world under the 2024 Basic Rules, but the table resolves it as a sequence of turns. Each participant takes a turn in initiative order, then the next round begins if combat continues.

Initiative is different from deciding who speaks first in a conversation or who acts first during ordinary exploration. Outside combat, a DM can move the scene along without rolling. When combat starts, initiative provides a shared structure so the group knows whose turn it is.

How to roll initiative

1. Establish who is involved. The DM identifies the characters and creatures participating in the encounter.
2. Roll a Dexterity check. Each player rolls a D20 and applies the modifier and other rules that affect that check. The DM rolls for monsters.
3. Record each total. Write down the result where everyone can follow the turn order.
4. Rank the participants. Put the highest total first and continue in descending order.
5. Take turns. Each participant acts when their place in the order comes up. The order generally remains the same from round to round.

If multiple identical monsters act as a group, the DM can make a single initiative roll for them under the 2024 rules. Check the official text for the full procedure and any specific exceptions.

Modifiers and special circumstances

Initiative uses a Dexterity check in the 2024 Basic Rules. A character’s relevant Dexterity modifier is therefore an important part of the total. Features, conditions, or other rules may also affect the roll. Read the exact wording of the feature rather than applying a familiar bonus automatically; rules language can differ between editions, character options, and game systems.

The rules include a surprise effect: a combatant who is surprised has Disadvantage on the initiative roll. This is not a separate “surprise round” in which an entire side automatically acts before the other. The group should follow the current rules for how surprise affects each combatant and when the DM determines it.

What is an initiative score?

The 2024 Rules Glossary describes an optional initiative score a DM might use instead of rolling. The score equals 10 plus the character’s Dexterity modifier. If the character has Advantage on initiative rolls, increase the score by 5; if they have Disadvantage, decrease it by 5. This can make turn order more predictable or speed up a scene when the DM chooses that method.

Because it is an alternative procedure, do not tell new players that every character has a fixed “default initiative” that automatically applies. The normal method is to roll initiative at the start of combat. Use an initiative score only when the DM elects to use it and applies the relevant rules.

Resolving ties

Ties are resolved according to the table’s rules. Under the 2024 Basic Rules, the DM decides the order among tied monsters, while the players decide the order among tied player characters. If a monster and a player character tie, the DM decides the order. If your group uses a different system or a different edition, confirm its tie rule rather than assuming it is identical.

For a friendly table, the DM can make the decision quickly and consistently. Some groups use a simple die roll between tied participants as a house procedure, but that should be identified as a table choice unless the game’s rules specifically direct it.

Tracking initiative at the table

Choose a tracking method everyone can understand: a written list, cards, tokens, a whiteboard, or a digital tracker. Put the current turn somewhere visible and move it after each participant acts. For a large group, record creature names or short labels so players can distinguish similar opponents.

Physical dice can make the first roll easy to see, but a D20 does not determine initiative by itself; the Dexterity check and other applicable modifiers matter. A single D20 or a full D&D dice set can be useful game equipment. Keep the procedure consistent and let the current rule text settle disputes.

Common initiative mistakes

• Calling 10 + Dexterity the normal roll: that is an initiative score the DM might use instead of rolling under the 2024 rules.
• Forgetting the check: normal initiative is a Dexterity check, not just the face value of the die.
• Assuming old rules apply: compare the edition your group is playing, especially when a character feature references initiative.
• Inventing a surprise round: use the current surprise rules instead of applying a procedure from another edition or game.
• Changing the order every round without a reason: the 2024 procedure generally keeps the same order during the encounter unless a rule changes it.
• Leaving players unsure whose turn it is: make the order visible and announce the next participant.

Frequently asked questions

Is initiative always a Dexterity check in D&D?

The 2024 Basic Rules use a Dexterity check to determine initiative, with rules that can modify the roll. A specific feature may change how a character participates, so read the feature and edition your group uses.

What is the default initiative in D&D?

There is no fixed number that should replace the usual roll in every encounter. The 2024 Rules Glossary describes an optional initiative score equal to 10 plus the Dexterity modifier, adjusted for Advantage or Disadvantage, when the DM chooses that method.

Does a natural 20 go first?

A natural 20 produces a high total, but initiative is determined by the total after applicable modifiers and any tie rules. Follow the exact rules for the edition you are playing.

Use the version your table agreed on

For D&D 2024, roll initiative as a Dexterity check, record the totals, and resolve ties using the published procedure. Use an initiative score only when the DM chooses that alternative. The official references are Playing the Game and the Rules Glossary. If your table uses an earlier edition, check that edition’s rules rather than applying this explanation unchanged.