What it means
The gap is built from three timings: how long stock sits before it is sold, how long customers take to pay, and how long you take to pay suppliers. Adding the first two and subtracting the third gives the days of trading the business is funding out of its own pocket, a figure also known as the cash conversion cycle.
It matters because the gap grows with sales. Every extra dollar of revenue at the same gap requires more funding, which is why fast growing companies so often feel poorer as they get bigger, and why growth can be more dangerous to cash than a downturn.
The analysis is used to size facilities and to target improvement. Once you know the gap in days and the daily value of trading, you can price exactly what ten fewer days of receivables would be worth, which makes the collections conversation concrete rather than a general plea to chase harder.
Each of the three levers behaves differently in practice. Receivables usually respond fastest to attention, stock takes longer and involves operations, and stretching supplier payments works but damages relationships and can cost more in lost early settlement discounts than it saves.
A useful refinement is to run the analysis by customer group or product line rather than for the whole business. The overall average often hides one segment with a gap two or three times the company norm, and that is usually where the quickest gains sit.
In practice
Real-world examples
Example 1
A wine importer holds stock for four months and sells to restaurants on thirty day terms while paying producers on delivery. The gap of roughly 150 days explains why an apparently profitable business is permanently at its borrowing limit.
Example 2
A supermarket sells stock in about twenty days, takes payment instantly at the till and pays suppliers in forty five days. Its cash gap is negative, meaning suppliers effectively fund the business and growth generates cash rather than absorbing it.
Example 3
An industrial cleaning contractor discovers its public sector customers pay in seventy days while private clients pay in twenty five. Splitting the analysis by segment justifies a different pricing structure for public sector work to cover the funding cost.
Think of it
Cash gap analysis finds where your cash timing doesn't match-when you need money before you have it.
Formula
Calculation
Cash gap in days = Days inventory outstanding + Days sales outstanding - Days payables outstanding, and Cash tied up = Cash gap in days x Average daily revenue
A building products merchant holds stock for 60 days, collects from customers in 45 days and pays suppliers in 30 days, so its cash gap is 60 + 45 - 30 = 75 days. Annual revenue is $18,250,000, giving average daily revenue of $18,250,000 / 365 = $50,000.
Cash tied up in the gap is 75 x $50,000 = $3,750,000. If a collections drive cuts days sales outstanding from 45 to 35, the gap falls to 60 + 35 - 30 = 65 days and the cash tied up becomes 65 x $50,000 = $3,250,000, releasing $3,750,000 - $3,250,000 = $500,000 without any change in sales or margin.Case study
Seen in the real world
This is an illustrative and entirely fictional case. Pellerton Supply, an invented distributor of electrical fittings, grew revenue from $12,000,000 to $20,000,000 in two years and could not understand why its overdraft was permanently drawn despite steady margins.
The controller ran a cash gap analysis and found a gap of 82 days on average daily revenue of about $55,000, tying up roughly $4,500,000 in working capital. Growth alone had added around $2,000,000 to that requirement, all of it funded by the bank.
Pellerton's fictional board set a target of cutting the gap to 60 days over four quarters, mainly by clearing slow moving stock lines and putting three chronically late accounts on prepayment. Achieving it released around $1,200,000, which repaid most of the overdraft and left the company able to fund its next growth step from its own balance sheet.
Watch out
Common mistakes
- Calculating the gap once a year, when the figure moves with seasonality and only a monthly trend shows what is actually happening.
- Attacking the gap purely by delaying supplier payments, which strains relationships and can forfeit settlement discounts worth more than the funding saved.
- Using the total company average and missing the one customer segment or product line that is causing most of the problem.
Questions
People also ask
Is the cash gap the same as the cash conversion cycle?
Yes, they are two names for the same calculation, though cash gap analysis usually goes further and converts the days into a dollar funding requirement.
Can the cash gap be negative?
Yes, and it is a strong position, since retailers and subscription businesses that collect before paying suppliers are funded by their own trading cycle.
What is a good target for the gap?
It depends heavily on the industry, so the most useful benchmark is your own trend over time and the figures of direct competitors rather than a general standard.
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