A handicap sums up your golfing ability in a single number, so beginners and experienced players can compete fairly against each other. In this guide you’ll find the exact World Handicap System formulas, two worked examples, a table for players with fewer than 20 scores and tips on how to bring your handicap down.
What is a golf handicap?
A handicap (often shortened to HCP) is a number that shows how well you play: the lower it is, the better. In a handicap competition, every player receives as many strokes as their level warrants, and the net scores are compared, i.e. the scores after those strokes have been deducted. That means a beginner can beat a more experienced playing partner if they have a good round by their own standards.
Today, handicaps are calculated under the unified World Handicap System (WHS), which was introduced from 2020 onwards and revised in 2024. The table below summarises its key terms.
| Term | What it means |
|---|---|
| Handicap Index | Your playing ability to one decimal place, up to a maximum of 54.0. It applies on every course. |
| Score Differential | The result of one round adjusted for the difficulty of the course; your index is calculated from these values. |
| Course Handicap | The number of strokes you receive on a particular course from a particular set of tees. |
| Playing Handicap | Your Course Handicap adjusted for the format of play in a competition. |
| Course Rating | The expected score of a scratch player (handicap 0) from the tees in question. |
| Slope Rating | How difficult the course is for a bogey player (roughly one over par per hole) compared with a scratch player; 55–155, standard 113. |
| PCC | An adjustment of −1 to +3 for abnormal conditions on the day of play. |
Your index is calculated from your best scores, so it reflects your better days rather than an average of all your rounds. It’s therefore normal for most rounds to turn out a little worse than your index would suggest.
How the Handicap Index is calculated
The starting point is the Score Differential of each round that counts towards your handicap. It shows how many strokes over the Course Rating you played, converted to a course of standard difficulty: This formula is for an 18-hole score; the system processes 9-hole scores using the relevant WHS procedure.
Score Differential = (113 / Slope Rating) × (adjusted gross score − Course Rating − PCC)
- Adjusted gross score applies the WHS hole-score limits for handicapping (see below).
- Course Rating and Slope Rating apply to the tees you played from and are usually shown on the scorecard.
- PCC (Playing Conditions Calculation) is an adjustment of −1 to +3 for abnormal conditions, such as strong wind. The system works it out from the scores of the players who played that day; in normal conditions it is 0.
Example: the Score Differential of one round
You return an adjusted gross score of 92 on a course with a Course Rating of 71.2 and a Slope Rating of 128. Conditions were normal, so the PCC is 0.
- 92 − 71.2 − 0 = 20.8
- 113 / 128 = 0.8828
- 0.8828 × 20.8 = 18.36, rounded to one decimal place 18.4
On a course with the same Course Rating but a Slope Rating of 113, the differential would be 20.8. In other words, the same score is rated more favourably on a more difficult course.
From differentials to your index
Your Handicap Index is the average of the 8 lowest – that is, best – Score Differentials from your most recent 20 scores, rounded to one decimal place. It is recalculated with every new round that counts: the oldest score drops out of the 20-round window and the new one comes in. This is the starting calculation; caps, exceptional-score adjustments or Handicap Committee decisions may change the final index.
Your official index is calculated by your national golf federation’s system. If you want to understand why it has changed, work it out yourself:
- For each round, find the adjusted gross score, Course Rating, Slope Rating and PCC.
- Calculate the differentials and round them to one decimal place.
- From the most recent 20, pick the 8 lowest.
- The average rounded to one decimal place is the basis of your index before any further WHS adjustments.
If you don’t have 20 scores yet
The table shows the calculation for 3 to 20 scores. Your national federation determines how many scores are needed for an initial index and how fewer scores are handled:
| Number of scores | Index is calculated from | Adjustment |
|---|---|---|
| 3 | the lowest differential | −2.0 |
| 4 | the lowest differential | −1.0 |
| 5 | the lowest differential | none |
| 6 | average of the 2 lowest | −1.0 |
| 7–8 | average of the 2 lowest | none |
| 9–11 | average of the 3 lowest | none |
| 12–14 | average of the 4 lowest | none |
| 15–16 | average of the 5 lowest | none |
| 17–18 | average of the 6 lowest | none |
| 19 | average of the 7 lowest | none |
| 20 | average of the 8 lowest | none |
For example, if the differential of 18.4 from the first example were the best of your four scores, your index would be 18.4 − 1.0 = 17.4. From seven scores onwards nothing is deducted, and more and more rounds are averaged, eventually 8 out of 20.
Common mistakes when you do the maths yourself
- You use your actual score instead of the adjusted one.
- You use the Course Rating and Slope Rating for different tees from the ones you played.
- You round too early. Only the differential and the index are rounded to one decimal place, and the Course Handicap is rounded to a whole number only at the very end.
Course Handicap and Playing Handicap: how many strokes you receive
You only have one Handicap Index, but the number of strokes you receive depends on the course and the tees. Before a round, your index is therefore converted into a Course Handicap: The formula below is for 18 holes.
Course Handicap = Handicap Index × (Slope Rating / 113) + (Course Rating − Par)
The result is rounded to a whole number. On a course with a higher Slope Rating, or with a Course Rating above par, you receive more strokes; on an easier one, fewer. In practice, your federation’s app usually works out your Course Handicap for you, or you can look it up in a table at the course.
Example: Course Handicap for an index of 18.4
With an index of 18.4, you play a course with a Slope Rating of 135, a Course Rating of 72.3 and a par of 72. The calculation looks like this:
- 18.4 × 135 / 113 = 21.98
- 72.3 − 72 = 0.3
- 21.98 + 0.3 = 22.28, rounded to a whole number 22
Course Handicap 22 means one stroke on every hole and a second on holes with stroke index 1 to 4. The allocation is on the scorecard and is not necessarily a simple ranking of difficulty.
Playing Handicap in competitions
Your Playing Handicap is found by applying the relevant handicap allowance to the unrounded Course Handicap. WHS recommends 95% for individual stroke play, but the responsible authority and competition terms determine the allowance in use. At 95%, our example gives 22.28 × 0.95 = 21.17, rounded to 21 strokes.
Net double bogey: the maximum per hole
For a player with an established index, a hole score is normally capped at net double bogey for handicapping, using the full Course Handicap rather than the reduced Playing Handicap. Before your first index, the cap is par + 5. Rule 3.1 can impose an additional limit for very high Course Handicaps.
Maximum hole score = par + 2 + the strokes you receive on that hole
With Course Handicap 22, the cap on a par 4 receiving one stroke is 4 + 2 + 1 = 7; a par 4 with stroke index 1 to 4 receives two strokes, giving 4 + 2 + 2 = 8. A higher actual score is capped at that figure for handicapping.
Handicap calculations and competition points can use different stroke allowances. In regular stroke play you must hole out; in Stableford you may pick up when no points remain available using your competition Playing Handicap. Our guide to the rules of golf sums up what else applies on the course.
How to get and keep a handicap
Handicaps are administered by your national golf federation, usually through the club you are a member of.
- Learn the basics. A beginner course teaches safe play, etiquette and the Rules. Ask your course and federation whether a certificate is required; requirements vary by country and course.
- Arrange handicap registration. Ask your club or national federation which membership, certification and initial-score requirements apply. These vary by country; 54.0 is the maximum Handicap Index, not an automatic worldwide starting handicap.
- Submit your scores. Acceptable competition and general play rounds in authorised formats count, including 9-hole rounds. Follow your federation’s pre-registration and marker requirements, play by the Rules and submit poor scores as well as good ones.
- Keep score honestly. Write down your strokes after every hole, not from memory in the clubhouse. A score counter can help too.
You can find your current index in your federation’s system, usually in its app as well. Rules for registering rounds vary from federation to federation, so if anything is unclear, ask your club.
How to lower your handicap
Your index comes down when your best rounds get better. You save strokes mainly around the green and on holes where a single mistake leads to a big number. Submit scores regularly so that your index reflects your current form.
Practise your short game
You putt on almost every hole, and you can practise your short game on a putting green, without needing a driving range. Alternate short putts from one to two metres, long putts to control distance and short shots around the green to a specific target. Training aids can help too.
With your short-game clubs, measure how far you hit the ball with a half and a three-quarter backswing, and check that there are no big gaps between those distances. Our guide to golf club loft explains how loft relates to distance.
Play smart
After a mistake, don’t take risks: get back into play by the safest route. When hitting into the green, aim for the middle rather than straight at the flag, especially when the flag is close to a bunker or penalty area. Knowing the exact distance helps; our guide to choosing a rangefinder explains how to decide between a rangefinder and a GPS golf watch.
Equipment that fits you
Clubs that don’t suit you in length, loft or shaft can force you to adapt your swing. During a custom fitting in our fitting studio, we measure ball flight and club movement on TrackMan iO and Uneekor EYE XO simulators: clubhead speed, angle of attack, spin and carry. We work with test sets of heads and shafts from Callaway, TaylorMade, Titleist, Ping, Srixon, Mizuno, Cobra, Wilson and Cleveland.
Ball and putter
If you always play the same ball model, your distances and the way the ball behaves on the green become more predictable. Our guide to golf ball characteristics explains how balls differ in construction and spin.
You reach for your putter on almost every hole, so it should suit you in both length and head shape. You’ll find out how to pick the right one in our guide on choosing a putter.
Frequently asked questions
What handicap does a beginner have?
54.0 is the highest Handicap Index. Your first index and the scores needed to obtain it depend on your national federation’s procedures and demonstrated ability. A beginner certificate does not itself establish a universal starting handicap.
Do 9-hole rounds count towards your handicap?
Yes, if the round meets acceptable-score conditions and your federation’s procedures. Nine-hole scores use a specific WHS process, rather than simply inserting a nine-hole score into the 18-hole formula shown here.
Will one bad round make my handicap worse?
Usually only slightly, or not at all. Your index is based on the best 8 of your last 20 scores, so a poor round usually doesn’t make it into the calculation. However, your index can go up when an older good score drops out of the 20-round window; the WHS also limits sharp increases relative to your lowest index over the past 12 months.
Summary
- With 20 scores, the best 8 Differentials form the basis of your index; further WHS adjustments and the 54.0 maximum apply.
- Score Differential = (113 / Slope Rating) × (adjusted gross score − Course Rating − PCC).
- Your Course Handicap determines how many strokes you receive on a particular course; in competitions, it is converted into a Playing Handicap according to the format of play.
- The WHS hole limit applies: usually net double bogey, or par + 5 before your first index.
- Your handicap is administered by your national federation through your club; 9-hole rounds count too.
- You lower your index mainly by practising your short game, playing sensibly and using equipment that fits you.
When you want to save strokes around the green and on the way to it, take a look at our wedges, putters and rangefinders and GPS watches.
You’ll find more topics in the overview of our golf guides.