How do you calculate a supplier discount?
Single discount formula
Net amount = list amount × (1 − discount rate). A 20% discount on TRY 1,000 leaves TRY 800.
Successive discount formula
Net = list × (1 − rate 1) × (1 − rate 2) × (1 − rate 3). Each rate applies to the remaining amount.
Why are successive discounts not the sum of their rates?
The second discount applies to the reduced price. On TRY 1,000, 20% saves TRY 200; 10% of the remaining TRY 800 saves TRY 80. The total reduction is TRY 280, or 28%, rather than 30%.
How do you find the discount needed for a target purchase price?
Required discount = (1 − target net amount ÷ list amount) × 100. A TRY 850 target on a TRY 1,000 list price requires 15%. Select “Find required discount”; the target cannot exceed the list amount.
Discount and VAT calculation order
The invoice discount reduces the taxable amount before VAT is calculated. Compare rates with the VAT calculator.
How does a supplier discount affect portion cost?
If cheese contributes TRY 40 to a portion, a 10% discount on cheese saves TRY 4 per portion. Other ingredients stay unchanged. Check the effect on portion cost.
Supplier discounts versus menu promotions
Restaurants may receive multiple discounts on cheese, coffee or packaging purchases. Compare supplier quotes on the same VAT-exclusive basis.
For guest-facing promotions, use the campaign impact calculator.