Your profit and loss statement can show a healthy profit while your bank balance quietly slides toward zero. This is the single most dangerous surprise for a first-time founder. Profit is an accounting opinion about a period. Cash is a fact you can spend today. A company does not die because it is unprofitable on paper. It dies when it cannot pay salaries, a vendor, or GST on the day those payments fall due. This lesson explains why the gap exists and how to keep it from killing your startup.
Profit and cash drift apart because of timing
When you raise an invoice, accounting records the revenue immediately, even though the customer may pay 30, 60, or 90 days later. That paper profit sits in your P&L, but the cash is not in your account. The same works in reverse: you may pay a supplier upfront for stock you will only sell next quarter. Profit measures what you earned and owed during a period. Cash measures what actually moved. The distance between the two is created by three things: receivables, payables, and inventory.
Receivables, payables, and inventory
- Receivables are money customers owe you. Large clients often pay slowly, so a big sale can lock up cash for months.
- Payables are money you owe suppliers. Paying later keeps cash in your account longer, which helps you.
- Inventory is cash converted into stock that has not yet been sold. It looks like an asset, but you cannot pay rent with it.
The cash conversion cycle
The cash conversion cycle measures how many days your money stays trapped before it returns as cash. In simple terms: days to sell inventory, plus days for customers to pay you, minus days you take to pay suppliers. A shorter cycle means cash returns faster. A negative cycle, where customers pay you before you pay suppliers, is a powerful advantage that some marketplaces and subscription businesses enjoy. If your cycle is long, growing faster actually consumes more cash, because every new sale ties up money for weeks before it comes back.
India-specific timing you must plan for
In India, several outflows are fixed by law and do not wait for your customers to pay you.
- GST: Monthly filers submit GSTR-3B by the 20th of the following month and pay the tax then. Small taxpayers with aggregate turnover up to Rs 5 crore can opt for the QRMP scheme, filing quarterly but paying tax monthly through a challan. Delayed GST payment attracts interest at 18 percent per year.
- TDS: Tax you deduct must generally be deposited by the 7th of the next month (for March, by 30th April).
- Section 43B(h): Effective from assessment year 2024-25, payments to registered micro and small enterprises must be made within 15 days, or within 45 days if there is a written agreement, as per the MSMED Act, 2006. If you pay late, that expense is disallowed as a deduction until the year you actually pay, which increases your taxable income for the current year.
The lesson: you may owe GST and TDS on invoices your customers have not yet paid. Plan cash for that gap.
Reading a simple cash flow statement
A cash flow statement answers one question: where did cash come from and where did it go. It has three parts.
- Operating activities: cash from your core business, after adjusting profit for receivables, payables, and inventory. This is the number to watch. Profit can be positive while operating cash flow is negative.
- Investing activities: cash spent on assets like equipment or laptops, or received from selling them.
- Financing activities: cash from investors or loans, and cash paid out to repay them.
Read operating cash flow first. If it is consistently negative while you claim profit, your receivables or inventory are swallowing your money.
What to do as a founder
Build a simple 13-week cash flow forecast in a spreadsheet listing every expected inflow and outflow by week. Invoice immediately, follow up on receivables early, and negotiate longer payment terms with suppliers where possible. Watch your bank balance and runway, not just your profit. A profitable company that runs out of cash is still out of business.