30% Off: sale price, savings and the reverse calculation
30% off means you pay 70% of the original price. On a $89.50 item the saving is $26.85 and the sale price is $62.65. The table below covers the common price points, and the calculator handles any amount.
Take 30% off any price
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How the discount is calculated
saving = original × 30/100
Sale price = original × (1 − 30/100). For $89.50: $89.50 × 0.7 = $62.65. The saving is the difference, $26.85, or original × 30/100 directly.
30% off common prices
| Original price | Price after 30% off | You save |
|---|---|---|
| $9.99 | $6.99 | $3.00 |
| $19.99 | $13.99 | $6.00 |
| $29.99 | $20.99 | $9.00 |
| $49.99 | $34.99 | $15.00 |
| $79.99 | $55.99 | $24.00 |
| $99.99 | $69.99 | $30.00 |
| $149.99 | $104.99 | $45.00 |
| $199.99 | $139.99 | $60.00 |
| $499.99 | $349.99 | $150.00 |
| $999.99 | $699.99 | $300.00 |
A second discount on top of 30%
If a coupon for 25% is applied after the 30% sale discount, the customer pays 0.7 × 0.75 of the original, an effective 47.5% off rather than 55%. The table shows every combination for the usual coupon sizes.
| Discounts applied | Effective discount | Final price on $89.50 | Not |
|---|---|---|---|
| 30% then 5% more | 33.5% | $59.52 | 35% |
| 30% then 10% more | 37% | $56.38 | 40% |
| 30% then 15% more | 40.5% | $53.25 | 45% |
| 30% then 20% more | 44% | $50.12 | 50% |
| 30% then 25% more | 47.5% | $46.99 | 55% |
Reverse: from the sale price back to the original
Going backwards: if the sale price is $62.65 after 30% off, the original was $62.65 ÷ 0.7 = $89.50. Dividing by 0.7, not multiplying by 1.30, is the step people get wrong.
Mental math for 30%
Sellers should read this discount against their margin. At 30% off, a line priced at a 60% gross margin still keeps 42.9% of the sale price; a line at a 30% margin keeps 0%, which may be less than its overheads.