Ecommerce Controller: 5 Questions to Ask Before You Hire
Sam's List Editorial | 2026-10-12
Many ecommerce owners hire a bookkeeper first, and that is a sound start. The trouble comes when sales cross into the millions, the marketplace payouts stop matching the bank, and nobody can say what the real margin is. That is usually the point where an ecommerce controller earns the salary, or the fee.
Here are five questions to ask before you hire one. They run in the order a good conversation tends to go, and the numbering is a sequence, not a ranking. The firm written up is Ottit, whose profile describes accounting, bookkeeping and controllership for fast-growth ecommerce, SaaS and small business operators generating $1 million to $95 million a year.
1. Ask About Bookkeeping vs Controllership: What an Ecommerce Controller Does Differently
The short answer: a bookkeeper records transactions, and a controller owns the quality of the numbers. The difference is mostly a difference in responsibility. A bookkeeper categorizes sales, fees and expenses and reconciles accounts. A controller sets accounting policies, reviews the close, catches what looks wrong and answers for the financial statements.
Ask the firm to put that in writing for your engagement. Who prepares the work, who reviews it, and who do you call when a number looks off? Titles are used loosely, and one firm's controller service can be another firm's bookkeeping with a monthly check.
The limitation: more review costs more. If you sell a few hundred orders a month through one channel, a good bookkeeper may be enough, and a controller can be more than the business needs yet.
2. Ask How an Ecommerce Controller Handles Marketplace and Processor Payouts
This is a common place for ecommerce books to go wrong. A marketplace or payment processor does not deposit your sales. It deposits sales minus fees, refunds, chargebacks and sometimes held reserves, in batches that do not line up with your order dates.
A careful team records gross sales, then fees and refunds separately, and ties each payout to the bank deposit it produced. Ask whether that happens for every channel you use, how often, and what happens to a payout that does not tie out. If the answer is that the books follow the bank deposits, your revenue and your fees will both be understated or blurred together.
The limitation: tying out payouts takes clean data from each platform. A controller can build the process, but it cannot fix an export a platform will not give you.
3. Ask How the Firm Treats Inventory and Cost of Goods Sold
If you sell physical products, your profit depends on what you record as the cost of what you sold. That means tracking what you bought, what is still on the shelf, and what it cost to land it, including freight and duties where they apply.
Ask which method the firm uses to value inventory, how often it reconciles the books to a real count, and who decides when stock is written down. Ask, too, whether your books run on a cash or accrual basis, since cost of goods behaves differently under each and your tax return may use another method again.
The limitation: no controller can value inventory the business has not counted. The books can only be as good as the count and the purchase records behind them, and a lender or buyer will ask for both.
4. Ask What the Ecommerce Month-End Close Looks Like
An ecommerce month-end close is the set of steps that turns a month of activity into financial statements you can rely on: reconcile every account, record payouts and fees, adjust inventory, accrue what you owe and review the result. A close that is finished on the fifth of the month is a different tool from one finished on the twenty-fifth.
Ask for the close calendar. When do you receive statements, what is in the package, and what open items are listed at the bottom? A good package names what is unresolved instead of hiding it. Ask also how a mistake found after the close is corrected and whether you will be told.
The limitation: a fast close comes from your cooperation as well as the firm's. If receipts, bank access or platform reports arrive late, the close arrives late, whoever is doing it.
5. Ask What Is In Scope for Tax, Sales Tax and Everything Else
Many owners assume that the firm doing the books also handles the tax return and sales tax. Sometimes it does, and sometimes those are separate engagements or separate firms. Sales tax in particular depends on where you have nexus: a physical presence, such as inventory stored in a warehouse, or sales above a state's economic threshold. Marketplace platforms often collect and remit tax on sales made through them, so ask what is still yours to register and file.
Ask for a scope list that names each of these: income tax return, sales tax registration and filing, payroll, 1099s, and any year-end clean-up. Where something is out of scope, ask who the firm works with, and whether that handoff is included.
The limitation: bundling is convenient but concentrates risk. If one firm records the numbers and also reviews them for tax, ask who checks that firm's work.
Where Ottit Fits
Ottit describes itself on its Sam's List profile as a full suite bookkeeping firm for fast-growth ecommerce, SaaS and small business companies, with accounting, bookkeeping and controllership for operators generating between $1 million and $95 million a year. The profile says it serves California and lists HENRYs, high net worth individuals and small business owners among its specialties.
That makes it a firm worth asking about when your questions look like the five above. Its profile does not list marketplace reconciliation, inventory costing or sales tax filing by name, so ask whether each is in scope.
Ottit has 24 verified client reviews on Sam's List as of 2026-10-12. Each review is submitted by an individual who identifies as a client of the firm and rates it on communication, subject-matter knowledge, and overall satisfaction. Reviews reflect those individual experiences and do not represent an endorsement by Sam's List. Ratings and rankings are not indicative of future performance or results.
The limitation, plainly: its profile frames the firm around operators in the $1 million to $95 million range, so a smaller seller should ask whether it is a fit. A profile cannot tell you who would work on your account, so ask for references from businesses like yours.
Frequently Asked Questions
What does an ecommerce controller do?
An ecommerce controller is responsible for the accuracy of an online business's financial statements. That usually means setting accounting policies, reviewing the monthly close, checking that marketplace payouts, inventory and fees are recorded correctly, and answering questions from owners, lenders and tax preparers.
Do I need a controller or a bookkeeper?
If your main need is recording transactions and reconciling accounts, a bookkeeper may be enough. If you need someone to review the work, own the close and explain the numbers to a lender or buyer, you are describing controller work. Many owners start with a bookkeeper and add review as revenue grows.
How long should an ecommerce month-end close take?
It varies with volume, channels and how complete your data is. Many small teams aim for a close in the first week or two of the following month. What matters most is that the firm gives you a date, delivers on it, and lists what is still open.
What should I ask about sales tax?
Ask whether the firm monitors where you sell, whether it registers and files for you or only advises, and who owns the answer if you cross a state's threshold. Rules differ by state, so confirm the details with a tax professional who knows the states where you sell.
If you are comparing firms, write down your five questions first, then browse accountants on Sam's List, including the firm above, and ask each one the same ones.
Disclosure: Sam's List takes no referral fee or commission on any engagement.
About the author: Kimberly Green is cofounder of Sam’s List, a directory and matching platform for financial professionals.
Were you featured in this piece, or know someone who should be? Share it.