How do I get exact was, now and you-save figures for my sale banner?

Take the final price rounded to two decimals, then work out the saving by subtracting it from the original price, instead of rounding the discount amount on its own. The discount calculator does exactly that, so the three numbers on your banner always add up.

Published · 2 min read

Where banner figures go wrong

When a price has cents or fils, such as 149.90, both the discount amount and the final price come out with three or more decimals. Round each one separately and both can go up by half a cent, so 'was' no longer equals 'now' plus 'save'. A careful customer notices, and whoever proofreads your campaign notices first.

Worked example

A product at 149.90 with 15% off.

The exact amount off is 22.485 and the exact final price is 127.415.

Round each on its own: 22.49 and 127.42, which total 149.91, a cent more than the original.

The calculator shows 127.42 and a saving of 22.48, which total exactly 149.90.

Preparing the banner figures, step by step

  1. Open the Discount calculator and type the original price exactly as the store shows it, cents included.
  2. Type the sale percentage.
  3. Copy 'Final price' as your 'now' figure and 'You save' as your saving figure, unchanged.
  4. Put the original price in the 'was' slot or as a strike-through, then check that the three agree.

The calculator rounds the final price to the nearest cent in the usual way. If your store rounds differently, use whatever the checkout page actually charges, because the amount the customer pays is the figure that counts.

A second product on the same banner

Many banners show two or three products. Run each one separately and never copy a saving across just because the percentage is the same.

Worked example

A price of 89.99 with 30% off: the exact result is 62.993.

Shown: now 62.99, save 27.00, which total 89.99.

The exact saving here is 26.997, but the figure that matches the displayed price is 27.00. That is precisely the number the banner needs.

Before you publish the design

  • State the percentage you actually apply, never a bigger one.
  • If store prices include tax, show tax-inclusive figures on the banner too, so shoppers never see two different prices.
  • If the banner is going on Instagram or Snapchat, you can stamp your logo on it with the Image watermark editor before posting.

Common questions

Should I write 'save 27' or 'save 27.00'?

Either is fine, just be consistent. If the prices show two decimals, show the saving with two decimals as well.

The offer is two discounts, a seasonal one and then a code. What goes on the banner?

Enter both in order and quote the equivalent single discount the calculator shows, not the two rates added together.