Logic function

NOT

Turn the answer around.

Purpose

Turn a test around

Returns

TRUE when the test was FALSE, and FALSE when it was TRUE

Syntax

=NOT(test)

ArgumentRequiredWhat goes here
testRequiredThe comparison to flip.

How to use NOT

NOT flips one test. It is the difference between what is on terms and what is not.

For a single comparison it is usually clearer to write the opposite directly: C2<>"On terms" says the same thing as NOT(C2="On terms") in fewer moving parts.

It earns its place around something that has no easy opposite, such as a whole AND or a lookup that comes back as a yes or no.

Examples

Every result below is worked out by the same evaluator that marks your answers, on the sheet shown here.

Payables ageing — October.xlsxSheet1
Harbour Foods payables at 31 October 2026, with supplier terms alongside
ABCDEFGH
1InvoiceSupplierStatusDays overdueAmountSupplierTerms (days)
2INV-8801Brightwell PaperOverdue12940Ashgrove Catering30
3INV-8802Calder UtilitiesQueried471180Brightwell Paper30
4INV-8803Meridian FreightOverdue632450Calder Utilities14
5INV-8804Ashgrove CateringOn terms0405Meridian Freight45
6INV-8805Brightwell PaperOverdue38760Thornbury Print60
7INV-8806Thornbury PrintOverdue911320
8INV-8807Meridian FreightOn terms0580
9INV-8808Calder UtilitiesOverdue24215
FormulaResult
=NOT(C5="On terms")Row 5 is on terms, so turning that around gives FALSE.FALSE
=IF(NOT(C2="On terms"),"Needs action","")Everything that is not on terms, whatever else it might be.Needs action
=AND(NOT(C3="On terms"),E3>1000)NOT wrapped around one of two tests inside an AND.TRUE

Notes

  • NOT takes exactly one test. To turn several around at once, put the AND or OR inside it.