Консолидация данных из разных систем

The structural advice above is right, but I'd add the specific signal to watch for: it's not transaction volume that breaks a sheet, it's how many systems need to agree with each other. A single well-built sheet can handle a lot of volume fine. What breaks it is when you're also tracking inventory, or invoicing, or multiple bank accounts/locations, and the sheet has to be the thing that reconciles all of them by hand. That's when one typo in one tab quietly throws off three others and you don't catch it for a month. Rule of thumb from running a few different small businesses: if you're only tracking money in/money out, a sheet is fine almost indefinitely. The day you need two of {inventory, invoicing, multi-location, payroll} to stay in sync with your books, that's the actual trigg…