← Back to blog April 18, 2026 · 7 min read

From Excel to KorevraOS — a 30-day playbook.

If your business runs on four heroic spreadsheets and one exhausted person who knows where they all are, this is the four-week path to KorevraOS that doesn't ask you to stop trading for a month.

The biggest reason good Nigerian SMEs never leave Excel isn't that Excel is great. It's that the cost of being wrong during a migration is a real month of lost revenue, and the failure stories are loud. So here's a boring, low-drama plan that has worked for our customers.

Week 1 — Audit, don't migrate.

Before you touch KorevraOS, write down the five to eight spreadsheets that actually run the business. For each one, answer three questions: who owns it, what decisions depend on it, and what would break if it disappeared on a Monday. That gives you your priority queue. Everything else is noise.

Also catalogue the shape of each sheet, not its contents. Column names, formula chains, colour-coded flags. This is the schema you'll map to KorevraOS modules in week 2 — finance, inventory, customers, HR, ops.

Week 2 — Set up a parallel KorevraOS tenant.

We provision your tenant in under an hour. Your admin imports the two priority spreadsheets as starter data — usually customers and inventory — using our CSV mapper, which handles Naira formatting, Nigerian phone numbers and NIN fields out of the box. Everything else stays in Excel for now.

Two rules for this week: nobody runs the business out of KorevraOS yet, and nobody stops updating Excel. You're shadowing.

Week 3 — Pick one workflow, cut over cleanly.

Usually sales invoicing. Move it entirely to KorevraOS on a Monday morning. The spreadsheet becomes read-only; all new invoices are issued from KorevraOS. Your team uses the product in anger for a full week. You'll find three things that aren't configured right. We fix them within 24 hours.

Hold the line on the "one workflow" discipline. The failure mode is trying to cut everything over at once and discovering field-level mismatches mid-sprint.

Week 4 — Sequential cutovers, no heroics.

With invoicing live, move the next workflow. Then the next. By the end of week 4 most SMEs have sales, inventory and a customer ledger in KorevraOS, with finance reporting following in week 5. Excel stays available as an archive — nobody is asking you to delete anything.

Three traps to avoid.

Don't try to clean your data first. Migrate dirty, clean in KorevraOS. Our dedup and merge tools are better than doing it manually in a spreadsheet, and "cleaning first" is how projects quietly die.

Don't grant everyone admin. Role-based access in KorevraOS is part of the value — it's also part of NDPR compliance. Set it up on day one, not day ninety.

Don't fire the spreadsheet until it's cold. Keep a read-only archive for at least a quarter. If anyone asks "what was the price of SKU 4421 in February", you want a source of truth that isn't a memory.

That's the whole thing. Four weeks, one workflow at a time, no hero launches. If you'd like us to walk through this against your specific sheets, book a 30-minute working session — bring the messiest workbook you have.