When you started selling on Amazon, bookkeeping was simple. Money came in, you bought more inventory, and at tax time you handed your accountant a pile of statements and hoped for the best.
But somewhere between $10,000 and $50,000 per month in revenue, that approach stops working. Sales tax obligations multiply. COGS tracking gets complicated across multiple suppliers and currencies. Amazon's payment reports become a maze of fees, reimbursements, and adjustments that don't match your bank deposits.
If you're spending more than 3 hours a month on your books — or worse, avoiding them entirely — it's time to hire a bookkeeper.
The 7 warning signs
1. You don't know your actual profit margins
Revenue is not profit. Most Amazon sellers can tell you their top-line revenue instantly but stammer when asked about net margins. A bookkeeper tracks every cost — product cost, shipping, Amazon fees, PPC spend, returns, storage fees, software subscriptions — so you always know your true profitability by SKU.
Without this data, you might be scaling a product that's actually losing money once all costs are accounted for.
2. You're behind on sales tax
Since the Wayfair decision, most states require sales tax collection once you hit economic nexus thresholds. Amazon handles collection in most cases, but you're still responsible for filing returns in every state where you have nexus. Miss a filing deadline and you're looking at penalties and interest.
A bookkeeper who specializes in e-commerce knows which states you need to file in and keeps you compliant automatically.
3. Your tax prep takes weeks, not days
If your accountant sends you a list of 20 questions every tax season, your books aren't clean. A bookkeeper maintains your records monthly so that when tax time comes, everything is reconciled and ready. Your CPA gets a clean P&L and balance sheet, not a shoebox of receipts.
The hidden cost: Messy books mean your CPA charges more. CPAs bill hourly, and untangling a year of unreconciled Amazon transactions can add $1,000-$3,000 to your tax prep bill.
4. You have inventory in multiple locations
FBA warehouses, 3PL providers, your garage, in-transit shipments — each location represents inventory value that needs to be tracked. As your business grows, inventory accounting gets exponentially more complex.
COGS (Cost of Goods Sold) calculation requires knowing exactly which units were sold from which purchase batch, especially if your supplier prices change between orders. Getting this wrong distorts your profitability numbers and your tax liability.
5. You can't get approved for a loan
Want to expand with an Amazon lending offer, an SBA loan, or a line of credit? Lenders want to see clean financial statements: a profit and loss statement, a balance sheet, and cash flow projections. If you can't produce these on demand, you can't access growth capital.
A bookkeeper keeps these statements current so you're always ready when an opportunity appears.
6. You're spending money you shouldn't be
Without clean books, it's easy to hemorrhage cash on subscriptions you forgot about, shipping costs that crept up, or ad spend that isn't generating returns. A bookkeeper categorizes every transaction and flags anomalies.
Common discoveries when sellers first hire a bookkeeper:
- Software subscriptions no one is using ($50-$200/mo)
- FBA fees that should have been reimbursed ($500-$2,000)
- Inventory shrinkage that wasn't being tracked
- Shipping rate increases that went unnoticed
7. You dread opening your accounting software
This is the most honest signal. If you avoid QuickBooks like the plague, if bank reconciliation fills you with anxiety, if you've been meaning to "catch up on the books" for three months — you need a bookkeeper. Life is too short to do work you hate when specialists exist.
What an e-commerce bookkeeper does
A specialized e-commerce bookkeeper handles:
- Monthly reconciliation — Matching Amazon settlement reports, Shopify payouts, and other platform payments to your bank deposits
- COGS tracking — Recording product costs, landed costs (shipping + duties), and calculating per-unit profitability
- Expense categorization — Sorting every transaction into the right chart of accounts category
- Sales tax compliance — Tracking nexus obligations and filing state returns (or coordinating with your tax service)
- Financial reporting — Monthly P&L, balance sheet, and cash flow statements
- Amazon fee reconciliation — Auditing FBA fees for overcharges and filing reimbursement claims
What to pay
- Part-time bookkeeper (for sellers doing $10k–$50k/mo): $300–$800/month
- Full-service bookkeeper (for sellers doing $50k–$200k/mo): $800–$1,500/month
- Bookkeeper + controller (for sellers doing $200k+/mo): $1,500–$3,000/month
These rates are for bookkeepers who specialize in e-commerce. General bookkeepers charge less but typically don't understand Amazon settlement reports, FBA fee structures, or inventory-based COGS — and you'll end up spending time explaining it to them.
The ROI
A bookkeeper at $500/month pays for themselves if they:
- Save you 3 hours/month of your own time (valued at $50+/hr)
- Find $200/month in recoverable Amazon fees or unnecessary expenses
- Reduce your CPA's tax prep bill by $1,000/year
- Help you identify one unprofitable SKU you were unknowingly scaling
That's conservative math, and it doesn't account for the peace of mind of actually knowing your numbers.
How to hire one
Look for bookkeepers who specifically advertise e-commerce or Amazon experience. Ask if they know how to reconcile Amazon settlement reports (this is the litmus test — if they've never seen one, they'll be learning on your dime).
On SellerHire, you can find bookkeepers who specialize in e-commerce accounting. Post a job describing your platform, revenue level, and number of SKUs, and our AI matching will surface candidates who've handled businesses like yours before.