SME Working Capital Limit Calculator

Estimate the working capital gap in your operating cycle, and the cash credit limit a bank might reasonably extend.

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days
days
days
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Recommended cash credit limit
Cash conversion cycle
Working capital gap
Inventory value
Receivables value

Estimates only. CalcPenny is not a lender, broker or financial adviser and this is not financial advice. Verify figures before making decisions.

Shortening the cycle beats borrowing more

Cutting inventory days or collecting receivables faster reduces the gap directly — often more cheaply than carrying a larger credit limit and paying interest on it. Planning beyond one operating cycle? See the Business Valuation Calculator.

Frequently asked questions

What is the cash conversion cycle?
The number of days your cash is tied up in the business before it comes back — inventory days plus receivable days, minus the days your suppliers let you delay payment. A longer cycle means more working capital is needed to keep operating.
Why does the bank only finance part of the gap?
Banks typically expect the business owner to fund a margin of the working capital requirement from their own resources (commonly around 25%) and finance the rest — this is the standard approach used in cash-credit limit assessment.
Should inventory and payables use sales value or cost?
This uses cost (via your gross margin) for inventory and payables, since that's what you actually paid to hold or owe for goods — receivables use the full sales value, since that's what's actually outstanding from customers.

Last updated: June 2026

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