Start with your shop, not the feature list
How do you choose retail billing and POS software when every option claims to do everything? You start from your own counter, not the brochure. Write down how a sale actually flows in your shop today — who bills, on what device, how payment is taken, how stock and purchases are tracked — and then test each option against that reality. The right tool is the one that fits your flow with the least friction.
To make that judgement repeatable, run every option through the same seven checks below. Score each one honestly during a trial. A tool that clears all seven for your kind of shop is a safe choice; one that fails even a couple of them will cost you later, no matter how impressive the demo looked.
1. Does it get GST and HSN right by itself?
The first check is compliance, because in India a billing tool that gets GST wrong is worse than no tool. Confirm it applies the correct tax split automatically — CGST plus SGST within your state, IGST across states — based on the place of supply, so no one has to remember which head to use. Confirm HSN or SAC codes sit on the item and print on every line.
Then push one level deeper. Does it keep invoice numbers consecutive for the year, handle round-off consistently, and produce a GSTR-1-ready summary? If the answer to any of these is "you do that part manually," the software has left the hardest, most error-prone work with you.
2. Is stock live and location-aware?
A billing tool that does not move stock is only half a tool. Check that every sale reduces stock and every purchase increases it, in real time, so the number on screen is one you can sell against. If you would still keep a separate stock register, the integration is cosmetic.
If you run more than one location — even just a shop and a back store — check that stock is tracked per location, not lumped into one total that hides where the goods really are. Also look for orders that reserve stock the moment they are taken, so you cannot promise the same unit to two customers.
3. How fast is the counter, really?
For any shop with a queue, POS speed is the check that customers feel. Time yourself raising a real bill: scan a barcode, add the item, take payment, print. Count the taps and the seconds. The fastest path should be the default path, with advanced options tucked away until you want them.
Add the end-of-day question too: does it support a proper shift close that reconciles cash and surfaces a shortfall the same evening? Counter speed during the day and clean reconciliation at night are two halves of the same requirement.
4. Can you control who does what?
As soon as more than one person uses the system, roles matter. Check that you can give a cashier the ability to bill without exposing cost prices, profit, or the power to delete records. The owner should decide what each role can see and change, not the software by default.
Pair roles with an audit log. When a figure looks off, you want to see exactly who created or edited a record and when. A tool that records every change turns an accusation into a fact and protects honest staff as much as it deters mistakes.
5. Do the reports answer real questions?
Reports are only useful if they answer the questions you actually ask: what did we sell today, what is my cash position, which items move, what is outstanding from which party. Check that a day’s activity rolls up into something like a Day Book you can read in a minute, and that party ledgers show who owes what.
Be wary of dashboards that look busy but do not help you decide anything. The test is simple: after a week of use, can you answer "how did the shop do this week?" from the software without exporting to a spreadsheet first?
6. Can you get your data out?
Your data is the one thing you must never lose control of. Check two directions before you commit. Getting in: can you bulk-import your existing items, parties and opening figures — ideally from Excel — so you are not typing your whole catalogue by hand? Getting out: can you export your records on demand, without special requests?
Easy import and easy export are a sign of confidence. Software that lets you leave cleanly is software that plans to keep you by being good, not by locking the door. Treat friction in either direction as a warning.
7. What is the total cost, not the headline price?
The last check is the honest cost of using the tool for a year. Add up the real numbers: the plan itself, the cost of a second or third user, any per-invoice limits, features held back for higher tiers, and any hardware you would need to buy. Then weigh that against the time and errors it removes.
A free starting plan lets you answer all seven checks on your own data before you spend anything, which is the best possible way to buy. Cheapest is not the goal; predictable cost that scales with your people and volume — not with surprise gates — is.
Run the checklist against RetailDek
RetailDek is built to pass this checklist for a small Indian retailer. GST and HSN are automatic from the place of supply, with round-off, amount in words and a GSTR-1 summary; stock is live and multi-godown with order reservation; the barcode POS bills fast and closes each shift with cash reconciliation. Roles and a full audit log control and record who does what, and the Day Book, party ledgers and reports answer the everyday questions without a spreadsheet.
On data and cost, you can import your catalogue from Excel to start, export your records whenever you like, and run it in the browser on devices you already own — with a 30-day free account so you can score every one of the seven checks on your own shop before you pay. Use the checklist on any option you are weighing; RetailDek was designed to hold up to it.