AS | Ankit Sarawagi|Founder, CFOmatrix·July 2026·10 min read | SOP + cadence |
- Order to cash is one loop: invoice raised (GST-correct, on time) → sent → recorded → AR ageing tracked → chased by bucket → receipt matched.
- Track receivables from the ageing report, not a hand-kept spreadsheet. Read the debtor ageing at least weekly.
- Chase on a fixed cadence: reminder at due, follow-up at 15 days, escalate at 30, treat 45 days plus as a serious collection issue.
- Confirm balances at year end. A signed balance confirmation means your AR is verified before the auditor even asks.
- Keep the whole trail in the tool. Invoice, receipt matched, ageing at close, so order to cash produces its own audit evidence.
| 6 Steps from invoice raised to receipt matched | 15 / 30 / 45 Days that trigger follow-up, escalation, action | 1 Report to run it all: the debtor ageing |
The Order to Cash Flow
The order to cash process (often shortened to O2C) is everything that happens after a customer says yes and before their money clears your account. Most founders think the hard part was closing the sale. In practice the cash is won or lost in the boring six steps that follow, and each one is a place a lean team can leak weeks of runway. This SOP is the process; the matching credit and collections policy is the rules (payment terms, credit limits, when to stop supply). You need both, and this post is part of our finance SOPs and controls guide for startups.
Raise the Invoice: GST-Correct and On Time
Every day an invoice is late is a day added to the wait for cash, because most customers pay a fixed number of days after they receive the invoice, not after you did the work. So the first control in order to cash is simply: raise the invoice the day the billing event happens, and get it right the first time so it does not bounce back for a correction.
The single cheapest way to speed up collections is to invoice on the day, not at month-end in a batch. A batch habit routinely adds ten to fifteen days to your DSO for no reason. Tie invoicing to the delivery or milestone in your process, so the invoice goes out the moment you have earned the right to it.
Track Receivables With AR Ageing
Once the invoice is out, the receivable starts to age, and this is where most startups go quiet. You do not need a spreadsheet you maintain by hand. Your accounting tool already produces the one report that matters: the debtor ageing (also called AR ageing). It sorts every unpaid invoice into buckets by how overdue it is. Read it at least weekly, and it tells you exactly who to chase and how hard.
| Ageing bucket | What it means | Action |
| Not yet due | Healthy, within terms | Polite reminder on or just before the due date |
| 1 to 30 days | Slipping, usually fixable | Firmer follow-up around day 15; confirm no dispute |
| 31 to 60 days | A real problem forming | Escalate to account owner or founder; get a payment date |
| 61 to 90 days | Collection risk | Formal demand; consider pausing further supply |
| 90 days plus | Doubtful, may need provision | Final notice; provide for doubtful debt; consider MSME / legal route |
Reading the ageing report weekly does two jobs at once. It drives collections, because each bucket has a matching action, and it feeds the monthly close, because the oldest bucket is what you provide against as doubtful debt. This ties directly into the discipline in our monthly close SOP, where the ageing report is one of the standard schedules you review.
“Receivables do not go bad on day 90. They go bad on day 5, when nobody sent the reminder. If you read the ageing report every week and act on each bucket, most of your cash simply arrives, and the few genuine problems surface early enough to actually do something about them.”
Ankit Sarawagi, from building the finance function at growing startupsThe Collections Cadence by Bucket
Chasing payment should never depend on someone remembering, or on how the founder feels that week. It should be a fixed cadence that runs the same way every time, tied to the ageing bucket. A consistent, scheduled cadence collects far more than sporadic chasing, and because it is identical every time it is easy for a lean team to run and easy to automate later.
For overdue B2B invoices where you are the smaller supplier, that 45-day mark is not arbitrary: India’s MSME rules give a registered micro or small supplier a statutory right to interest on payments delayed beyond the agreed date (and beyond 45 days at most). If chasing has failed, the customer and credit onboarding SOP covers how a proper credit check up front prevents most of these, and the MSME delayed-payment remedy is the formal escalation when a genuine B2B debt goes stale.
The most expensive overdue invoice is the one held up by a dispute nobody told you about. That is why the day-15 follow-up explicitly asks “is there any issue with this invoice?”. Surfacing a dispute at 15 days is a quick fix; discovering it at 90 days, when the contact has moved on, is often an unrecoverable write-off.
Audit Trail and Balance Confirmations
Receivables are one of the first things an auditor and a diligence team dig into, because it is where revenue can be overstated. They will not take your word that the money is owed; they want the paper trail, and they will independently confirm the balance with your customer. Run order to cash inside your tool and that evidence already exists.
Startups rarely get caught for having weak receivables; they get caught for being unable to show the paperwork behind good ones. Because every step above happens inside the tool as part of normal work, the audit evidence is produced as a byproduct, not assembled in a panic in Q4. This is the same audit-trail discipline that runs through the whole series, from the monthly close to the finance SOPs and controls pillar guide.
Lean Now, When to Add a Step
The version above runs on one owner, one weekly ageing review and a fixed cadence, which is right for a small team. You add machinery only when volume genuinely outgrows a person reading a report, not because a bigger company does it that way.
- Invoices raised in Zoho Books on the day
- One person reads the ageing report weekly
- Cadence sent manually, logged on the account
- Founder joins in only to escalate stuck accounts
- Invoice volume makes manual reminders impractical: add a collections tool that auto-sends the cadence
- You sell on credit at scale: add a credit-check and credit-limit step at onboarding
- A dedicated AR owner joins to run collections
- Many small-value invoices: automate receipt matching
The order does not change as you scale, only who and what runs it. Keep the flow, the buckets and the cadence identical, and layer automation on top when the invoice count justifies the cost.
Frequently Asked Questions
What is the order to cash process?
Order to cash (O2C) is the full cycle that turns a closed sale into money in the bank. It runs from raising a correct invoice, sending it to the customer, and recording it in your accounting tool, through tracking the receivable as it ages, chasing payment on a set cadence, and finally matching the receipt against the invoice. For a startup the whole point is to make each step lightweight and repeatable so cash actually arrives on time and every step leaves a record an auditor can follow.
How do I track receivables in a startup?
Record every invoice in your accounting tool (Zoho Books or QuickBooks) the moment it is raised, with the correct due date, and let the tool maintain the accounts receivable ledger for you. Then read the debtor ageing report at least weekly. That single report shows every unpaid invoice sorted into buckets by how overdue it is, so you always know who owes what and for how long. Tracking receivables is not a spreadsheet you maintain by hand; it is the ageing report your tool already produces, read on a fixed rhythm.
What is AR ageing?
AR ageing, or debtor ageing, is a report that groups your unpaid customer invoices by how long they have been outstanding: typically not yet due, 1 to 30 days overdue, 31 to 60, 61 to 90, and 90 days plus. It tells you at a glance which receivables are healthy and which are turning into a problem. The older a bucket, the lower the chance of collecting and the harder you should be chasing. It is the core report that drives both your collections cadence and your provision for doubtful debts.
How often should I chase payment from customers?
Follow a fixed cadence tied to the ageing bucket, not your mood. Send a polite reminder on or just before the due date, a firmer follow-up at around 15 days overdue, escalate to the account owner or founder at about 30 days, and treat 45 days and beyond as a serious collection issue that may need a formal demand. A consistent, scheduled cadence collects far more than sporadic chasing, and because it is the same every time, it is easy for a lean team to run and easy to automate later.
What are balance confirmations?
A balance confirmation is a letter or email in which a customer confirms the amount they owe you as at a given date, usually the financial year end. Auditors send these independently to verify that your receivables are real and correctly stated. Running your own balance confirmations at year end, keeping the signed replies on file, means your AR is already verified before the audit starts. It also surfaces disputes early, while they are still small enough to fix, instead of at the point you are trying to collect.
How do I keep accounts receivable audit-ready?
Keep the whole trail in your accounting tool: the invoice, the sent record, the due date, the receipt matched against the invoice, and the ageing report at each period close. Save the customer purchase order or contract that backs each invoice, log collection follow-ups against the account, and run year-end balance confirmations. Startups get caught not because they lack receivables but because they cannot show the paperwork behind them. Run order to cash inside the tool and the audit evidence is produced as a byproduct, not as a scramble later.
This is general educational information for founders, current to mid-2026, drawing on the author’s experience building finance functions inside growing startups, and is not legal, tax or audit advice. GST treatment, ageing bands, payment terms and the MSME delayed-payment position vary by company and change over time. Verify your own position or consult a professional before acting on a specific matter.
The Monthly Close SOP
Finance SOPs and Controls: The Founder’s Guide
AS | Founder, CFOmatrix | Finance Strategy & Equity Compliance CFOmatrix is a knowledge platform focused on how finance actually works inside growing companies. This SOP draws on hands-on experience setting up right-sized invoicing, receivables and collections processes with an audit trail for lean startup teams. |