Introduction
Proficiency is PF2e's math language and permission structure. It tells the game whether your character is guessing, competent, specialized, elite, or absurdly good at something. It also explains why "just a +1" is a phrase spoken by people who are about to learn about critical success thresholds.
Use this guide with checks and DCs, skill check DCs, skills, best skill feats, classes, automatic bonus progression, and variant rules.
Hot take: proficiency is not just a number. It is the game deciding whether your character is allowed to look impressive on purpose.
Proficiency Ranks
| Rank | Bonus Pattern |
|---|---|
| Untrained ● | +0. You rely on the d20, attributes, and outside help. Many tasks are unavailable or unreliable. |
| Trained ● | Level + 2. This is the first real permission gate: trained actions, skill feats, class assumptions, and competent participation. |
| Expert ● | Level + 4. This is where a character starts feeling meaningfully ahead of the party baseline in that field. |
| Master ● | Level + 6. Master ranks support serious specialization, harder DCs, stronger skill feats, and higher-stakes tasks. |
| Legendary ● | Level + 8. Legendary is not merely "good at the thing." It is the rank where the game starts handing you mythic-looking permission. |
The common formula is:
| Statistic | Formula |
|---|---|
| Skill check | d20 + key attribute modifier + proficiency bonus + other bonuses + penalties |
| Attack roll | d20 + attack attribute modifier + weapon or spell proficiency bonus + other bonuses + penalties |
| Armor Class | 10 + Dexterity modifier up to armor cap + armor proficiency bonus + armor item bonus + other bonuses + penalties |
| Saving throw | d20 + save attribute modifier + proficiency bonus + other bonuses + penalties |
| Spell DC | 10 + spellcasting attribute modifier + spellcasting proficiency bonus + other bonuses + penalties |
| Class DC | 10 + key attribute modifier + class DC proficiency bonus + other bonuses + penalties |
| Perception DC | 10 + total Perception modifier |
Different parts of the sheet can have different ranks. A Fighter can be terrifying with weapons and ordinary with Occultism. A Wizard can have a strong spell DC and still treat a longbow like a confusing stick.
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Why The Rank Matters
PF2e uses four degrees of success. Beating a DC by 10 upgrades success to critical success. Missing by 10 downgrades failure to critical failure. That means rank increases do more than add accuracy. They change how often a character gets the best outcome and how often they dodge the worst one.
| Investment | What It Usually Buys |
|---|---|
| Training ● | Access to trained actions, skill feats, class expectations, and level-based scaling. |
| Expert rank ● | Better Aid benefits, Follow the Expert leadership, stronger skill feats, and real reliability. |
| Master rank ● | High-end skill feats, serious DC access, and the ability to carry scenes in your specialty. |
| Legendary rank ● | Narrative-scale competence and late-game feats that can change how scenes work. |
| Attribute only ● | Helpful, but it does not unlock trained actions or keep pace with level-based math. |
| Item bonus only ● | Useful support, but not a substitute for rank. Buying tools is not the same as knowing what they are for. |
The short version: a +2 rank jump is not small. In a four-degree system, it changes both success rate and critical result rate.
Where Proficiency Shows Up
| Area | Why It Matters |
|---|---|
| Skills ● | Skill ranks unlock actions, feats, exploration solutions, social leverage, and downtime options. |
| Attacks ● | Weapon and spell attack proficiency decide whether repeated combat actions are reliable or optimistic. |
| Armor and AC ● | Armor proficiency is a major part of survivability. Wearing better armor without proficiency is not a personality. |
| Saves ● | Fortitude, Reflex, and Will proficiency decide whether a character shrugs off danger or becomes the example. |
| Perception ● | Perception affects initiative, detection, secret doors, ambushes, and many DCs used against you. |
| Spell DCs ● | Spellcasters need proficiency progression because save-based spells live and die on DC pressure. |
| Class DCs ● | Class features, impulses, special actions, and non-spell abilities often key off class DC. |
| Lore ● | Specific Lore can make some Recall Knowledge checks easier, especially when it matches the exact subject. |
This is why class guides care so much about progression. A class is not just a pile of features. It is a schedule of when your math becomes rude.
Minimum Proficiency
Some tasks require a minimum proficiency rank. The GM Core calls this out for things like locks, traps, and other specialized challenges. A character below the minimum might be allowed to roll, but they cannot actually succeed unless the GM rules otherwise.
| Minimum Rank | Good Use |
|---|---|
| Trained ● | Common specialist actions: identifying magic, deciphering writing, crafting, earning income, treating wounds, or doing tasks that require basic instruction. |
| Expert ● | Tasks that need serious practice, unusual equipment, or professional competence. |
| Master ● | High-level locks, major occult theory, rare hazards, and elite technical work. |
| Legendary ● | Extreme late-game challenges. Use sparingly, and do not gate low-level scenes behind it. |
GM Core's warning is important: do not require impossible ranks too early. If a 2nd-level task needs expert, a 6th-level task needs master, or a 14th-level task needs legendary, the requirement is probably too aggressive.
Simple DCs And Level-Based DCs
GM Core gives two big DC tools:
| DC Tool | Best Use |
|---|---|
| Simple DCs ● | Use when the task is defined by complexity rather than level: untrained 10, trained 15, expert 20, master 30, legendary 40. |
| Level-based DCs ● | Use when the subject has a level: creature, spell, item, hazard, task, settlement, or leveled obstacle. |
| DC adjustments ● | Apply when rarity, obscurity, perfect tools, exact Lore, poor conditions, or bad information make the baseline too easy or hard. |
| Group attempts ● | If everyone can roll and only one success is needed, the task is easier than it looks. Raise difficulty or use a better structure if tension matters. |
For deeper DC handling, use checks and DCs, skill check DCs, GM skill DCs, and GM screen reference.
Skills And Follow The Expert
Skill proficiency is where ranks feel the most visible. Many skill actions require training, and higher ranks unlock stronger skill feats. The skills hub and best skill feats are the next stops after this page.
Follow the Expert is also worth knowing. During exploration, an expert, master, or legendary ally can help others attempt recurring skill checks. The follower can add level even if untrained and gains a circumstance bonus based on the leader's rank.
| Use Case | Why It Matters |
|---|---|
| Climbing as a party ● | The expert climber helps the group survive a scene that would otherwise punish one weak link. |
| Avoiding Notice ● | A stealth specialist can help less sneaky allies avoid turning exploration into a percussion section. |
| Wilderness travel ● | Survival and Nature specialists can lead the group through recurring checks without making everyone invest equally. |
| Social routines ● | Works only when the activity makes sense. You cannot Follow the Expert through every conversation by nodding impressively. |
Follow the Expert is a good reason for at least one party member to push a few skills high instead of everyone spreading ranks thin.
Class Progression Pressure
Different classes feel proficiency in different places.
| Class Or Role | Proficiency Pressure |
|---|---|
| Fighter ● | Weapon proficiency is the class identity. Fighter accuracy is a feature, not a rumor. |
| Rogue ● | Skill increases, skill feats, and precision tactics make rank choices central. |
| Investigator ● | Perception, skills, Recall Knowledge, and methodology choices all reward precise investment. |
| Swashbuckler ● | Skill actions feed combat rhythm, so the wrong skill rank can make the class feel clunky. |
| Alchemist ● | Crafting, alchemical items, bombs, and item DCs make proficiency choices practical every day. |
| Wizard, Cleric, Druid, and Witch ● | Spell DC and spell attack progression decide whether save spells create control or polite suggestions. |
| Champion and Monk ● | Defensive proficiency and saves make the front line durable in very different ways. |
When a class guide ranks feats, subclasses, equipment, and attributes, proficiency timing is one of the invisible levers behind the advice.
Retraining Proficiency Choices
The retraining rules let characters change many build choices during downtime. Skill increases can be retrained by reducing one skill's rank and increasing another, within the limits of what the character could legally have at that point.
| Retraining Choice | Advice |
|---|---|
| Bad trained skill ● | Retrain it if the campaign never uses it and your party needs another role covered. |
| Skill feat prerequisite ● | Check prerequisites before moving ranks. If you lose the prerequisite, you can lose access to the feat. |
| Campaign change ● | If the story moves from wilderness to court intrigue, rank changes can keep the character relevant. |
| Chasing every new option ● | Retraining is useful, but constant rebuilds can make the character feel less like a person and more like a spreadsheet in boots. |
GMs should usually allow reasonable retraining. The rule exists because early guesses are not always campaign truths.
Variants That Change The Feel
| Variant | What Changes |
|---|---|
| Automatic Bonus Progression ● | Moves expected item bonuses into character progression, changing gear pressure without removing proficiency ranks. |
| Proficiency Without Level ● | Flattens the math by removing level from proficiency, making lower-level enemies and tasks stay relevant longer. It also changes encounter and DC expectations. |
| Free Archetype ● | Adds more build options and trained abilities, but does not remove the need to invest in core ranks. |
| Extra trained skills ● | Helpful for small parties with gaps. It improves coverage without making everyone legendary at everything. |
Use variant rules, automatic bonus progression, and adjusting encounters before changing the math. Variants are real mechanical changes, not seasoning.
Common Mistakes
| Mistake | Fix |
|---|---|
| Treating trained as optional | Many actions and feats require training. If the rule says trained, a big attribute modifier does not substitute. |
| Forgetting level scaling | Trained at level 10 is not the same modifier as trained at level 1. Level is a major part of PF2e's math. |
| Ignoring item bonuses | Attack, AC, skill, and save expectations often assume appropriate gear unless a variant changes that. |
| Setting impossible minimum ranks | Do not gate low-level tasks behind expert, master, or legendary unless the scene is intentionally beyond the party. |
| Letting group checks erase difficulty | If five people can roll and one success solves it, the task is easier than the listed DC suggests. |
| Calling everything legendary | Legendary should feel rare. If every door needs legendary Thievery, the dungeon architect needs to calm down. |
Hot Takes
- Untrained is not "bad at it." It is "the game has not agreed that you know what you are doing."
- Expert is the first rank where a character can lead the table through a recurring problem.
- Master and legendary should change what the story lets you attempt, not just the size of the modifier.
- A +1 matters because PF2e has critical thresholds. Stop disrespecting the little number.
- Proficiency Without Level is a campaign identity choice, not a casual toggle.
