BEHIND THE NUMBERS
How this calculation works
Multiply each denomination in pence by its whole-number count, add the subtotals and divide by 100. Till difference = counted cash − expected cash. All cash arithmetic uses integer pence.
Worked example
£40 in twenties + £5 + £1.50 in 50p coins + £0.04 = £46.54. Against £50 expected, the drawer is £3.46 short.
Example result: £46.54
Checking a till
Count the drawer before comparing it with the expected balance. A negative difference is a shortfall; a positive difference is an overage. Check the opening float and refunds before treating either as a sales error.
A denomination is a value
The £20 field counts notes, not pounds. Two £20 notes belong in that field as 2. Coins and notes with the same sterling face value have the same arithmetic value.
Assumptions and rounding
- The counts are physical notes and coins, not their combined monetary values.
- Displayed totals are exact to the penny.
Questions about this calculator
Can I leave unused denominations blank?
Enter 0 so that an unfinished count cannot silently be treated as zero.
Are Scottish notes included?
The £5 to £100 value fields can count sterling notes of those face values. No issuer or acceptance decision is made.