How is my Handicap Index calculated?

Question

Accepted Answer

Each round becomes a Score Differential (Rule 5.1a): (113 ÷ Slope Rating) × (adjusted gross score − Course Rating − PCC adjustment) The playing conditions calculation (PCC) adjusts for unusually hard or easy days, from −1.0 to +3.0. Your Handicap Index is the average of the lowest 8 of your most recent 20 Score Differentials (Rule 5.2b). With fewer than 20 scores (Rule 5.2a): Differentials in record Used Adjustment 3 Lowest 1 −2.0 4 Lowest 1 −1.0 5 Lowest 1 0 6 Average of lowest 2 −1.0 7 or 8 Average of lowest 2 0 9 to 11 Average of lowest 3 0 12 to 14 Average of lowest 4 0 15 or 16 Average of lowest 5 0 17 or 18 Average of lowest 6 0 19 Average of lowest 7 0 A 9-hole score is combined with your expected score for 9 holes to make an 18-hole Score Differential (Rule 5.1b).

Differentials in record	Used	Adjustment
3	Lowest 1	−2.0
4	Lowest 1	−1.0
5	Lowest 1	0
6	Average of lowest 2	−1.0
7 or 8	Average of lowest 2	0
9 to 11	Average of lowest 3	0
12 to 14	Average of lowest 4	0
15 or 16	Average of lowest 5	0