Automation is built on three sheets: a reference sheet, a transaction log, and a stock balance report. Balances are calculated using the SUMIFS function, which sums incoming and outgoing quantities for each SKU.

For accurate cost and profit tracking, the FIFO method is often required, which is more complex and requires a combination of functions.

If you are just starting out, master the basics. A detailed guide on how to create a formula in Excel from scratch will help you understand the logic from simple addition to SUMIFS.

🔗 Source: excel.rf