6 Questions to Ask Before You Switch Accounting Systems

6 Questions to Ask Before You Switch Accounting Systems

Switching accounting software is one of the few projects that can make a company's numbers worse for a year. Not because the new system is bad, but because a migration surfaces every unresolved decision about how the business keeps its books, all at once, on a deadline.

The failures are predictable. Somebody moves opening balances only and then cannot compare this March to last March. Somebody redesigns the chart of accounts mid-year and breaks every prior report. Somebody discovers in week three that the billing integration does not exist. Answer these six questions honestly before you sign anything, and most of that goes away.

1. Is the Software Actually the Problem?

Start here, because the answer is often no. A slow close, unreliable numbers, and reports nobody trusts are usually process failures wearing a software costume.

Ask what specifically the current system cannot do. If the answer is a real constraint, multi-entity consolidation, inventory costing at the level you need, revenue recognition schedules, dimensional reporting, then a migration is warranted. If the answer is that the books are late and messy, a new system will be late and messy in a nicer interface.

The honest test: write down the three things you want to be true after the switch. If none of them are functions of the software, fix the process first. That is cheaper and it also makes any future migration easier.

2. How Much History Are You Moving?

This is the decision people underestimate most. There are three common options and they cost very different amounts.

Opening balances only is the cheapest and fastest. It also means your new system has no comparative history, so for twelve months you will be running two systems to answer any year-over-year question. Moving summary trial balances by month is a middle path that preserves comparability at a reporting level without full detail. Moving full transaction detail is the most expensive and the only one that gives you drill-down into prior years.

There is no universally right answer. There is a wrong way to make the decision, which is to let it be made by default in week two because nobody raised it.

3. Who Owns the Chart of Accounts Redesign?

A migration is the natural moment to fix a chart of accounts that has grown by accretion for eight years. It is also the moment that decision becomes dangerous, because remapping accounts changes what your historical reports say.

Somebody needs to own the mapping, account by account, and to decide explicitly whether prior periods get restated to the new structure or left in the old one. If they get restated, budget the time. If they do not, write down that comparisons before the cutover date use a different structure, so nobody spends a quarter chasing a variance that is a mapping artifact.

The related trap is over-designing. A chart of accounts with 400 accounts because someone wanted departmental detail usually should have been 60 accounts plus a dimension or class field. Detail belongs in dimensions, not in account numbers.

4. Which Integrations Are Load-Bearing?

List every system that currently pushes data into or pulls data out of your accounting file: payroll, point of sale, billing and subscriptions, expense management, inventory, bank feeds, the reporting layer.

Then sort them into load-bearing and convenient. If payroll breaks, you have a payday problem. If a dashboard breaks, you have an annoyance. For each load-bearing item, get a specific answer on whether the integration exists natively, whether it requires a middleware tool, and what the manual fallback looks like for a month.

Vendors are optimistic about integrations. The useful question is not whether it connects but what specifically syncs, in which direction, how often, and what happens to a failed record.

5. What Does the Close Look Like in Months One, Two, and Three?

Month one after a cutover is almost always slower and messier than the old system's worst month. Plan for that instead of being surprised by it.

Write out who is doing the close, what is being reconciled, and what the acceptable delay is. Assume you will run parallel for at least one cycle, which means someone is doing the work twice. If your team is already at capacity, that is the constraint that determines your timeline, not the software.

Set a specific definition of done, something like three consecutive closes completed in the new system inside your normal window, with reconciliations tying and no unexplained variances. Without that, migrations do not end. They just stop getting attention.

6. What Is the Real Cost?

The license fee is the smallest number in this project. The real cost is implementation help, data migration work, parallel running, staff time pulled off other work, and the cleanup you will find in month two.

Ask any implementation partner for a scope that separates those lines, and ask what has historically caused overruns. A partner who says the migration is straightforward has either not seen your data or is not being direct with you.

Then compare that total against the value of the three things you wrote down in question one. Sometimes it clears easily. Sometimes the honest conclusion is that a cleanup engagement on the current system gets you 80 percent of the benefit for 20 percent of the cost, which is a good outcome, not a failure.

Where Outside Help Changes the Odds

A migration is a project, and most small finance teams do not have project capacity sitting idle. The specific value of outside help is that someone has done the mapping and the parallel close before and knows which decisions are irreversible.

System Six is a Sam's List firm based in Seattle, working since 2009 with small business owners and real estate investors on the bookkeeping and financial operations side rather than only on tax. A firm that lives in accounting systems day to day is the right kind of help for a cutover, because the questions above are operational questions.

The limits are worth stating. An outside firm cannot make the decision about how much history to move, or how much reporting detail your business genuinely needs. Those are yours. What outside help does is make the consequences of each choice visible before you commit, and results depend on your own team's availability during the transition. Confirm scope and fit before engaging, and review the firm's profile on Sam's List.

Frequently Asked Questions

When should a business switch accounting software? When the current system has a specific functional limit you keep hitting, such as multi-entity consolidation, inventory costing, revenue recognition schedules, or dimensional reporting. If the complaint is that the books are late or unreliable, that is usually a process problem, and a migration will carry it into the new system rather than fix it.

How much historical data should I migrate? Three common choices: opening balances only, monthly summary trial balances, or full transaction detail. Balances only is cheapest but leaves you without comparatives for a year. Summary balances preserve reporting comparability. Full detail is the most expensive and the only option that gives you prior-year drill-down. Decide deliberately rather than by default.

Should I redesign my chart of accounts during a migration? It is the natural moment, but decide upfront whether prior periods get restated to the new structure. If they do not, document that comparisons across the cutover date use different structures. Also resist adding accounts for detail that belongs in a class or dimension field instead.

How long does an accounting system migration take? It varies with data volume, integrations, and team capacity, and the honest planning assumption is one to three close cycles of parallel running. Set a completion test, such as three consecutive on-time closes with reconciliations tying, so the project has a defined end rather than trailing off.

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About the author: Kimberly Green is the cofounder of Sam's List, where business owners and high earners find vetted CPAs, financial advisors, and fractional CFOs. She's met one-on-one with 400+ financial professionals and writes from the real data behind thousands of client-advisor matches. Ask her anything about finding an accountant - she's heard it all, including the questions people are afraid to ask.