An ecommerce business needs more than an accountant when day-to-day reporting is no longer enough to support decisions on cash flow, stock and growth. Common signs include a bank asking for a cash flow forecast, ongoing cash pressure despite healthy sales, or stock orders that need modelling before you commit. At that stage, the business usually needs a fractional CFO rather than compliance support alone.
What is the difference between an accountant and a fractional CFO for ecommerce?
An accountant and a fractional CFO serve different purposes. An accountant handles compliance: tax returns, VAT submissions, year-end filings, and the records required by HMRC. A fractional CFO handles the forward-looking work: cash flow modelling, stock funding decisions, management reporting, and the financial conversations you need to have with your bank before questions become urgent.
For ecommerce founders, that difference becomes more important as the business grows.
An accountant records and reports what has already happened. A fractional CFO works in real time alongside the business on the decisions that are happening now, whether that is planning stock purchases and hiring decisions, managing platform payout timing, or working out what the cash position looks like over the next few months.
How do I know if my ecommerce business has outgrown our accountant?
An ecommerce business has outgrown its accountant when financial reporting no longer supports decision-making. This usually shows up as profit not matching cash, limited visibility across platforms, and no forward planning.
It can also look like:
- Cash is tight despite strong sales
- Stock levels increase without a clear plan
- Margins change without explanation
- Decisions rely on instinct or bank balance
When does an ecommerce business need a fractional CFO?
An ecommerce business usually needs a fractional CFO when financial decisions cannot be answered with the information currently available. For example, when a stock order needs funding and there is no model to tell you whether the cash will be there. Your bank might ask for rolling forecasts that your accountant does not produce, or if management accounts arrive six weeks after the period ends and describe a position the business has already moved past. Those are all signs the business has outgrown what it currently has.
Another obvious sign you need infrastructure is when you start running the financial calculations in your head rather than from a model. You know roughly how much is in your account, and when the next platform payout arrives, and you work through the stock maths manually every time a decision comes up.
Why can’t my accountant help with cash flow forecasting?
Many accountants do not help with cash flow forecasting because it sits outside the scope of standard compliance work. The work involves building and maintaining a live model, updating it as orders, payouts, and costs change, and interpreting it in the context of decisions being made now. That requires a different kind of engagement from compliance reporting, and most compliance practices are not set up to do it on an ongoing basis.
For ecommerce businesses, the forecasting problem is quite different from other industries. Stock has to be paid for months before it sells, platform payouts lag the sale by days or weeks, and supplier terms and seasonal demand create cash pressure at predictable points in the year. An accountant working from year-end data sees none of this in real time. A fractional CFO builds a model that accounts for all of it and uses that model to support decisions throughout the year.
What financial questions should your accountant be able to answer?
Your accountant should be able to answer questions about tax, VAT, and statutory accounts deadlines. They should be able to tell you your current tax position, whether your VAT returns are up to date, and whether your accounts are filed correctly.
Beyond that, the more useful question is whether the business now needs a different level of financial support. Can the person you work with tell you what your cash position will be in 90 days? Will they model what happens if you place a stock order at current supplier prices and the next platform payout is delayed by two weeks? Will their reporting show where the business is heading?
If not, it’s likely your business has reached the point where it needs forward-looking finance support, not just compliance work.
What does moving to a fractional CFO involve?
Moving to a fractional CFO usually starts with a review of how the business currently handles cash flow, reporting and financial decision-making. The first stage is typically diagnostic, before any new reporting or forecasting is put in place.
A fractional CFO engagement for an ecommerce business normally starts with understanding the current financial position: the cash cycle, the stock model or absence of one, the management accounts format, and how the business currently communicates with its bank. The first few weeks tend to be diagnostic before they are advisory.
For Specialist Accounting Solutions clients, the work usually involves rebuilding the management reporting, establishing a cash flow model the founder can use for ongoing decisions, and setting up the bank reporting in a format that demonstrates the business has its financial processes under control. We send Loom video walkthroughs alongside the management accounts to make the numbers easier to understand.
We support ecommerce businesses fractionally, which means the business is not hiring a full-time finance director. A senior FD in this kind of role costs between £80,000 and £130,000 in salary alone. For an ecommerce business in the £1 million to £20 million revenue range, a fractional arrangement covers the financial leadership work at a fraction of that cost and scales with what the business needs.
When should an ecommerce business hire a fractional CFO?
The right time is when significant financial decisions are being made without reliable data to support them. Common triggers are a bank request for management accounts or forecasts the business cannot currently produce, cash running persistently tight despite growing revenue, and stock decisions being made from memory rather than a model.
How much does a fractional CFO cost for an ecommerce business?
A fractional CFO engagement is significantly less expensive than hiring a full-time finance director. A senior FD costs between £80,000 and £130,000 in salary alone, before employer costs. A fractional arrangement is structured as a monthly retainer and scales with the scope and hours the business needs.
What is the difference between a fractional CFO and a virtual CFO?
The two terms are used interchangeably in practice. A fractional CFO usually describes a senior finance professional working across several businesses on a part-time, remote basis. The distinction is less important than understanding what the scope of work includes and whether the person has direct ecommerce experience.
Can my accountant do cash flow forecasting?
Some accountants offer cash flow forecasting as an additional service, but it is not part of a standard compliance engagement. Ongoing cash flow modelling for an ecommerce business, built around stock cycles, platform payouts, and seasonal demand, requires a different kind of engagement from compliance accounting.
At what revenue level does an ecommerce business outgrow its accountant?
There is no single turnover threshold as all ecommerce businesses differ. For many, the point arrives after £1 million in revenue, when the complexity of the financial decisions being made outpaces what a standard accountant can support. A fast-growing business at £800,000 may need fractional CFO support before a stable business at £2 million does.
What does a fractional CFO do day to day?
Day to day, a fractional CFO for an ecommerce business typically manages the cash flow model, produces and interprets management accounts, prepares reporting for lenders and investors, and advises on significant operating decisions such as stock purchases, supplier negotiations, hiring decisions, and growth funding. The day-to-day work is built around keeping the financial picture current and helping the business make better informed and confident decisions.
How do I know if my management accounts are good enough?
Management accounts produced six or more weeks after the period ends are rarely useful for current decision-making. Useful management accounts arrive within two to three weeks of period end, include commentary explaining the key movements in plain language, and are presented in a format that both the founder and any lenders can follow without specialist knowledge.
Is a fractional CFO right for a small ecommerce business?
A fractional CFO is not necessary for every ecommerce business. The right time to consider one is before the lack of proper financial support causes a problem, rather than after it already has. For businesses growing past the point where the founder can hold the full financial picture in their head, the cost of a fractional engagement is usually justified by better decisions on stock, cash, and growth funding.
Need help with cash flow forecasting and ecommerce finance?
If your ecommerce business is growing but the numbers aren’t helping you make decisions, that is usually when basic reporting isn’t enough.
We work with ecommerce businesses that need clearer reporting, cash flow forecasting and senior finance input without hiring a full-time finance director.
Author notes
Written by Sean Hackemann, Director of Specialist Accounting Solutions. Team SAS works with ecommerce businesses at £1 million revenue upwards, providing fractional CFO and management accounting services focused on cash flow, strategic advice, and financial decision-making.
