do i need accounting software for my amazon business

What accounting software actually does for an Amazon seller

Accounting software for Amazon sellers isn't just a fancier spreadsheet. It pulls your settlement reports (or transaction-level data) and books each component separately: gross sales, Amazon referral fees, FBA fulfillment fees, storage fees, advertising spend, refunds, chargebacks, and reimbursements. Instead of recording one deposit as 'income,' you get a profit and loss statement that shows what you actually earned and what it cost you to earn it.

The mechanics matter because Amazon doesn't pay you your sales total. It pays you sales minus everything it charged you that pay period, on a rolling two-week (or custom) cycle. If you just record deposits as revenue, you understate your top-line sales, overstate or understate expenses depending on timing, and lose the ability to see your real margin by product or SKU. That's the core reason accounting software for Amazon sellers exists as its own category rather than sellers just using generic bookkeeping tools out of the box.

Why Amazon settlement reports break spreadsheets

A settlement report can run into hundreds of line items even for a modest seller: order-level sales, per-unit FBA fees, monthly storage, long-term storage surcharges, advertising cost per click, promotional discounts, return shipping, and reimbursements for lost or damaged inventory. Doing that manually in a spreadsheet for one or two months is tedious but doable. Doing it every month, across multiple marketplaces, while also trying to run a business, is where most sellers quietly give up and just track 'money in, money out' instead.

The problem compounds once you sell on more than one channel. If you're also on eBay or running a Shopify store, you now need ecommerce accounting that can consolidate multiple settlement formats into one chart of accounts, not three separate spreadsheets that never agree with each other. Ebay accounting software and Shopify accounting software solve the same core problem Amazon sellers have, just with different fee structures and payout schedules, which is why most sellers eventually centralize everything in one accounting system rather than trying to reconcile channel by channel.

A worked example: turning one settlement into real books

Say a seller runs $40,000 in gross Amazon sales in a two-week settlement period. Here's a simplified, hypothetical breakdown of how that turns into a deposit and what accounting software would book behind the scenes:

None of these numbers are real fee schedules, they're illustrative. But you can see the point: a $40,000 sales figure turns into a $26,000 deposit, and if you just booked the deposit as income you'd be $14,000 off on revenue and you'd have zero visibility into the fact that FBA fees ate 15% of sales. Accounting software books each of those seven lines separately, so your P&L shows true gross sales, true expenses by category, and a margin you can actually trust when you're deciding whether to raise prices or drop a SKU.

• •Gross product sales: $40,000
• •Amazon referral fees: -$6,000 (category-based percentage, verify against the current fee schedule)
• •FBA fulfillment fees: -$4,800
• •Storage fees: -$650
• •Advertising (Sponsored Products): -$2,200
• •Refunds to customers: -$1,100
• •FBA inventory reimbursement (lost units): +$750
• •Net deposit to your bank: $26,000

Sales tax is the part spreadsheets handle worst

Since the Supreme Court's 2018 Wayfair decision, states can require out-of-state sellers to collect sales tax based on economic nexus, meaning you cross a sales or transaction threshold in that state, not just because you have a warehouse or office there. That single ruling is why sales tax exposure grew fast for online sellers with no physical footprint outside their home state.

The good news is Amazon itself now handles most of the actual collection. Nearly every state with a sales tax has marketplace facilitator laws requiring platforms like Amazon and eBay to collect and remit sales tax on third-party sales directly, so you're usually not cutting a check to each state yourself. But 'Amazon collects it' doesn't mean your books are automatically right. You still need to record the tax collected and remitted as a pass-through, not as revenue, and you still need to know your own nexus footprint if you sell on other channels that don't collect for you, like a Shopify store. Accounting software that separates tax collected from gross sales keeps this clean instead of inflating your reported revenue.

1099-K reporting and why your books need to match Amazon's numbers

Amazon issues a 1099-K based on your gross unadjusted sales, not your net deposits, and it reports that figure to the IRS. The reporting threshold for third-party platforms has been changing and phasing down in recent years rather than sitting at a fixed level, so more sellers are getting a 1099-K each year than in the past, even smaller part-time sellers.

This creates a real problem if your bookkeeping only tracks net deposits: your books will show a much smaller revenue number than the 1099-K, and if the IRS ever compares the two, you need a clear paper trail showing the gap is fees, refunds, and returns, not unreported income. Accounting software that ties gross sales, fees, and net deposits together gives you that reconciliation automatically, so tax season is a matter of pulling a report, not rebuilding a year of transactions from memory.

FBA reimbursements: money you're owed that most sellers never book correctly

Amazon loses and damages inventory. When it does, it reimburses you, but the rules for how much you get changed. As of 2025, Amazon reimburses lost or damaged FBA inventory based on your manufacturing or sourcing cost, not the retail price you sell it for, and it uses its own estimate of that cost unless you've provided your actual cost data. Sellers who never upload real product costs get reimbursed at Amazon's guess, which is often lower than what the unit actually cost them.

From a bookkeeping standpoint, reimbursements need to hit your books as their own line, not get buried into general revenue or ignored entirely because they show up in a random settlement period weeks after the loss. If you're not tracking reimbursements against actual inventory losses, you have no way to check whether Amazon paid you correctly or catch cases where a reimbursement never arrived at all.

Common mistakes sellers make without proper accounting software

Most of the damage isn't from having no bookkeeping at all, it's from bookkeeping that looks reasonable but is quietly wrong. Here are the patterns that show up over and over:

• •Recording bank deposits as revenue, which understates gross sales and overstates margin
• •Booking inventory purchases as an immediate expense instead of an asset, which distorts profit in the month you buy stock
• •Never separating sales tax collected from revenue, which inflates your top line and confuses your real margin
• •Ignoring reimbursements entirely, or lumping them into 'other income' where nobody checks whether the amount is right
• •Treating advertising spend, storage fees, and referral fees as one combined 'Amazon fees' bucket, which makes it impossible to see which cost is actually eating your margin
• •Waiting until tax season to reconcile a full year of settlement reports at once, by which point details are impossible to verify

QuickBooks, Xero, or Amazon-specific software: how to actually choose

Generic tools like QuickBooks and Xero are solid general ledgers, but they weren't built to parse an Amazon settlement report. Quickbooks for Amazon sellers usually means pairing it with a connector or an Amazon-specific tool that translates settlement data into the categorized entries QuickBooks needs. The same is true for Xero for Amazon sellers: Xero handles the accounting side well once the data is clean, but it doesn't natively understand FBA fee codes or reimbursement types.

Third-party sellers now account for more than half of the physical gross merchandise sold on Amazon, which tells you how much competition there is and how thin margins can get when fees and ad spend aren't tracked carefully. If you're serious about the business, the practical path is Amazon accounting software that syncs to QuickBooks & Xero, so you get the Amazon-specific breakdown (fees, reimbursements, reserves) feeding directly into a general ledger you or your accountant already trust. That combination beats either tool alone: raw QuickBooks or Xero without an Amazon connector, or an Amazon tool with no path into real financial statements.

It's worth being honest about the trade-off: software costs money and takes an afternoon to set up properly, including mapping your chart of accounts and connecting historical settlement data. If you're doing $500 a month as a side hustle, a careful spreadsheet might genuinely be enough for a while. The calculation changes once you're paying yourself from the business, applying for a loan or line of credit, working with a tax preparer who needs clean books, or trying to figure out true per-SKU profitability to decide what to reorder.

What to do next

If you're still doing your books by hand, the first move isn't to buy software, it's to pull three months of settlement reports and manually categorize them once. That exercise alone usually reveals whether your current 'revenue equals deposits' approach has been overstating or understating your margin, and by how much.

Once you've seen the gap, the decision gets easy. Set up a chart of accounts that separates gross sales, referral fees, fulfillment fees, storage, advertising, refunds, and reimbursements as distinct lines. Connect that structure to software built for the way Amazon actually pays you, sync it to QuickBooks or Xero if you want your accountant working from real financial statements instead of a bank feed, and review your P&L monthly instead of once a year at tax time. The businesses that get burned aren't the ones with imperfect books, they're the ones that never look at the books until a tax deadline or a loan application forces the question.