VAT = total × 15 ÷ 115 (about 13.04% of the total)
Ready examples
Total
Before VAT
VAT
115
100.00
15.00
57.50
50.00
7.50
1,150
1,000.00
150.00
2,300
2,000.00
300.00
5,000
4,347.83
652.17
The common mistake
Many people subtract 15% from the total: 1,150 − 15% = 977.50, which is wrong. VAT is 15% of the price before VAT, so it’s 150 SAR, not 172.50. The right answer is 1,150 ÷ 1.15 = 1,000 SAR.
Adding VAT
To add VAT to a price, multiply by 1.15: 1,000 SAR becomes 1,150 SAR including VAT.