Accountants worked in columns long before computers. The paper 'spreadsheet' was a fixture of every practice, so when VisiCalc put that grid on a screen in 1979, the fit was obvious. Lotus 1-2-3 ruled the 80s, then Excel took over by the mid-90s and stayed. A spreadsheet maps almost perfectly onto a ledger, which is why accountants took to each one early.
Decades on, the workpaper still lives in Excel. A new cloud suite turns up every year promising to replace it, and most accountants open a fresh workbook anyway. There's a solid reason behind that habit, and it's worth spelling out.
Control is the real draw
A spreadsheet does exactly what you tell it, shows its working in every cell, and bends to each client instead of boxing them into a fixed template.
You build a schedule around how a client's accounts actually run, drop in a working column, reconcile a balance, and leave your logic on the page for whoever opens the file next.
A reviewer can trace any number back to its formula. A new starter can read the workbook on day one because they learned Excel before they joined your firm. And when a client turns up with a structure no template planned for, you build what fits.
That freedom is the whole appeal. A cloud suite hands you structure up front, and it starts to pinch the moment a client falls outside it. Excel waits for you to decide, then does exactly what you ask.
Excel still carries compliance work
It has held on for a reason. Excel runs the calculations, lays out the workpaper, and carries the review notes on which sign-off depends. The one job it hands back to you is keeping the figures tied to Xero, and most firms still do that part by hand. That's where the smooth run ends.
The friction lives in one handoff
That handoff is manual. You export a report from Xero, paste it into Excel, format it, and a single late transaction sends you back to the start. Across a full client list, that manual re-pull becomes the biggest time cost in the file. It's also where small errors creep in: a column pasted one row down, last week's export mistaken for today's, a figure typed in place of a link. Every one of them traces back to the same manual step.
Keep Excel, and keep your data current
The gap is the easy part to close, and you give up nothing to do it.
RadiusCore is an Excel add-in that links Microsoft Excel straight to Xero, with two-way sync.
The workbook you built stays exactly as it is, and the numbers refresh with a click. Connect a client once, and the whole firm shares that connection, so anyone can pull the latest data. More than 450 accountants and 10,000+ Xero entities already work this way.
Excel stays, the busywork goes
Excel earns its place because it fits how accountants think. It bends to each client, shows it's working, and never asks the team to learn something new.
The one weak spot is the manual hop to Xero, and that's the part you can hand off. Give Excel a live link to Xero, and it keeps doing the job you already trust it for, now with current data and far less manual work. You keep the workbook, the logic, and the muscle memory your team has built over the years. The copy-paste is the only thing you leave behind.
FAQ
Should accountants move off Excel for workpapers? Most don't need to. Excel remains the best place to build flexible workpapers. The gap worth closing is the manual data transfer between Excel and Xero, which an add-in like RadiusCore handles directly.
Can you connect Excel workpapers to Xero? Yes. RadiusCore connects Excel to Xero with two-way sync, so workpapers pull live data and push changes back without leaving the sheet.
Is RadiusCore a replacement for my workpaper process? No. It works inside your existing Excel process and removes the manual export step.

Andrew Pullon
Founder, RadiusCore
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