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Danzinger & Co. provides ecommerce accounting, bookkeeping and tax services for online sellers across New York — Shopify stores, Amazon and marketplace sellers, DTC brands and multi-channel retailers. We reconcile every payout to the penny, track true landed cost and margin by product, manage multi-state sales tax, and give you numbers you can scale on.
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The questions New York online sellers ask us most, answered in plain English. Swipe through.
Ecommerce accounting is bookkeeping and tax built for businesses that sell online: it reconciles marketplace payouts to real sales, values inventory at landed cost, tracks margin by product and channel, and handles sales tax across every state you sell into.
Done right, it tells you which products, channels and campaigns make money after every fee — and what you’ll owe at year end.
A traditional retailer rings a sale and gets paid. An online store gets paid in batches, net of fees, days later, across several platforms, with refunds and chargebacks netted in. Inventory sits in a 3PL or Amazon warehouse you never see, and sales tax rules change state by state.
Every one of those differences needs its own process, which is why a generic template leaves ecommerce books wrong within a month.
Accrual, as soon as you carry meaningful inventory or sell across channels. Cash-basis books swing with purchase orders and payout timing, which hides real profit. Accrual matches cost of goods to the sale and gives lenders and buyers the numbers they expect.
We can still keep your tax return on a cash basis where it saves you money while your management books run accrual.
Start from gross sales, then subtract landed cost, platform and payment fees, ad spend allocated to the product, fulfillment, and returns. What is left is contribution margin — the number that should decide what you reorder and promote.
Most stores that track this for the first time find one or two hero products carrying the rest.
Before the first big inventory buy, before you cross sales tax thresholds in new states, and before you take outside money. Those moments lock in decisions on entity, inventory method and tax that are expensive to unwind later.
A CPA who knows ecommerce will also flag New York specifics, from NYS sales tax on delivery charges to city filings for a Brooklyn or Manhattan office.
Ecommerce moves faster than its accounting. Sales land as net payouts days after the order, inventory is paid for months before it sells, ad spend runs daily, and every state you ship into has its own sales tax rule. Your Shopify dashboard shows revenue; it doesn’t show profit.
When those pieces are tracked from bank deposits alone, revenue is understated, fees disappear into “cost of sales”, margin by product is unknowable, and a sales tax notice can arrive from a state you’ve never set foot in. These are the four problems we see most often with sellers across New York.
Challenge 01
Challenge 02
Challenge 03
Challenge 04Shopify, Amazon, Stripe and PayPal deposit net amounts after fees, refunds, holds and chargebacks. Book the deposit as revenue and your sales, fees and margin are all wrong at once.
Economic nexus rules mean a growing store owes sales tax in states it has never shipped from. Miss a registration and the liability compounds quietly, with penalties on top.
You pay suppliers, freight and duties months before the product sells. Without landed-cost tracking and a cash forecast, a great quarter can still end with an empty account.
Meta and Google spend, marketplace fees, 3PL pick-and-pack and returns all land in different places. Until they’re mapped to the product and channel, ROAS is a guess.
Danzinger & Co. is a New City, NY CPA firm that keeps the books for Shopify stores, Amazon sellers and DTC brands selling across the country. We build your accounting around how online sales actually flow — order, payout, fee, refund, inventory — so every number ties out and every decision starts from margin, not revenue.
Here’s what we do for you:
Reconcile Shopify, Amazon, Stripe and PayPal payouts to gross sales, fees, refunds and chargebacks. Each deposit is broken back into its parts so revenue is revenue, fees are fees and refunds are refunds. Your P&L matches your dashboards, and your bank.
Track cost of goods sold at true landed cost: product, freight, duties, packaging and 3PL fees. Inventory is valued at what it really cost to get to the shelf, so gross margin by product is real, not a guess from the supplier invoice.
Register, collect, file and remit sales tax wherever economic nexus applies, including New York. We monitor nexus thresholds by state, set up your collection settings correctly, and file on time so notices never become penalties.
Measure contribution margin by channel and product after ad spend, fees and returns. Shopify, Amazon, wholesale and social each get their own view, with ad spend and platform fees allocated where they belong, so you scale what actually earns.
Account for returns, refunds, chargebacks and marketplace reserves without distorting revenue. Reserves and holds are tracked as receivables, refunds net against the right period, and chargebacks are flagged so you can dispute them.
Keep inventory counts and values in sync across your 3PL, Amazon FBA and your own stock. Monthly inventory reconciliation against 3PL and FBA reports catches shrinkage, lost inbound shipments and reimbursements you are owed.
Forecast cash so purchase orders, ad budgets and tax payments never collide. A rolling 13-week cash forecast built around your reorder cycle, so you know what you can commit to a PO before you place it.
Handle New York State and City filings, sales tax and the entity returns behind your store. NYS sales tax, corporate and LLC returns, 1099s for contractors and creators, and quarterly estimates, all run from one filing calendar.
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Your books connect to the platforms you already run on. No re-keying, no mystery journal entries.
No junior hand-offs. The person who understands your margin is the person who answers when you call.
You know the cost before the work starts, and it doesn’t jump because you added a channel.
One conversation is usually enough to see where fees, inventory and tax are eating your margin. Call (347) 410-1839 or send us a note below.
Book a Strategy CallTell us what you sell and where, and we’ll show you what channel-level reporting looks like. Fill out the form and a senior accountant will reply within one business day.
“Ten-plus years and they’ve never let me down — exactly what you want from the people managing your finances.”
“Always had good service with Danzinger & Co! Moshe has been consistent, reliable, honest and kind throughout the years.”