Which Scores to Post for Handicap: The Rule Most Golfers Get Wrong

The short answer: post almost everything

If a round is played under the Rules of Golf, on a rated course, with at least one other person, it goes in. That means solo rounds are out. It also means your 94 on a bad Saturday counts just like your 78. The single most useful takeaway: you don't choose which scores to post for handicap. You post every eligible round and let the math sort it out.

The misconception that trips up most club players is thinking only good rounds count, or that blow-up rounds should be quietly forgotten. Neither is true. The World Handicap System takes your best 8 of your most recent 20 scores, so the bad days already get filtered out. Hiding them just makes your index wrong.

What counts as an eligible round

A score is postable when it's made in a format that follows the Rules of Golf, on a course with an active Course Rating and Slope Rating, and played with at least one other person. That last part is the one people miss. A quiet nine holes by yourself at dusk doesn't qualify, no matter how well you struck it.

Both 9-hole and 18-hole rounds count. Nine-hole scores get combined with another nine to form an 18-hole score, or posted as a 9-hole score that the system pairs up later. Match play, stroke play, stableford, and most team formats are all eligible. What isn't eligible: rounds where you pick up on every hole, rounds on an unrated course, and rounds played alone.

There's also a rule about incomplete holes. If you start a hole but don't finish, you record the score you most likely would have made. The WHS gives a specific method for this, but the practical version is: most likely score, not par, not double par.

How the scores become your index

Every posted score gets converted into a score differential. The formula is:

(Adjusted Gross Score − Course Rating) × 113 ÷ Slope Rating

Adjusted Gross Score means your score after applying net double bogey as the maximum on any hole. You don't need to calculate that by hand — our free golf handicap calculator at fairwayvip.com/calculator handles the differentials and the 8-of-20 selection automatically.

Here's a concrete example. A player posts these recent scores on a course with a Course Rating of 71.4 and a Slope Rating of 128:

• Round 1: 84 → differential 11.1
• Round 2: 91 → differential 17.3
• Round 3: 79 → differential 6.7
• Round 4: 88 → differential 14.7
• Round 5: 82 → differential 9.4

With only five scores posted, the WHS uses the lowest one plus an adjustment. Once the player reaches 20 scores, the system takes the best 8 differentials, averages them, and that average is the handicap index. So if the best 8 differentials average 9.8, the index is 9.8.

Course handicap is a separate number. It's your index multiplied by the slope rating of the course you're playing, divided by 113, plus the difference between course rating and par. That's why a 9.8 index plays as an 11 at a hard course and an 8 at an easy one. The handicap index calculator at fairwayvip.com/handicap-index does this conversion for any course you're standing on.

Common posting mistakes and how the system handles them

The biggest error is not posting a bad round because it feels embarrassing. It doesn't matter. The 8-of-20 rule means one 100 among twenty scores barely moves the needle, and it actually protects you from a suspiciously low index that would get flagged for review.

Another mistake is posting a score from a course that wasn't rated for the tees played. If the tees you played don't have a rating and slope, the round isn't eligible. Same for a course played in a scramble format where you didn't play your own ball on every hole.

Players also forget that the maximum score on any hole is net double bogey, not par. If you're a 14 handicap and you make a 9 on a par 4 where you get one stroke, the score posted for that hole is capped at 7. This is why a round that felt like a disaster often posts lower than expected.

Finally, scores need to be posted promptly — ideally the same day. Most clubs and apps allow posting within a reasonable window, but waiting weeks to post a score you half-remember leads to inaccuracies that hurt you in the long run.

Post the round. Post the bad ones. The system is built to absorb them.

Frequently Asked Questions