.....staff considering an application for entry clearance, leave to remain, further leave to remain or indefinite leave to remain must demonstrate calculations detailing the actual financial position of the applicant/sponsor in all cases that fall for refusal using the following formula:
A – B ≥ C
A minus B is greater than or equal to C.
Where:
A is the projected NET income (after deduction of income tax and national insurance contributions);
B is what needs to be spent on accommodation (rent/mortgage and council tax); and
C is the amount of Income Support an equivalent British family of that size can receive.