Corporate Returns for Ecommerce and Online Sellers in New York City
The 1120-S, the 1120, and the three returns a New York store files
Which corporate return you file depends on your election, and the two paths diverge sharply. If your store is an S corporation, it files a federal Form 1120-S, which is an information return, because the profit is not taxed at the corporate level. Instead it passes through to your personal return on a Schedule K-1, where you pay the income tax. If your store is a C corporation, it files Form 1120 and pays federal income tax itself at the flat 21 percent rate, and any money it distributes to you as a dividend is taxed again on your return, the classic double tax. Most single-owner ecommerce stores that incorporate elect S status precisely to avoid that second layer, but the choice interacts with everything else, which is why we tie the return back to the analysis in our entity formation and structuring. Whichever federal return applies, a New York City store then files two more. New York State wants its corporate franchise return, and New York City wants its own return, and both apply whether the store made money or not. So an incorporated seller in the city is filing three returns minimum, federal, state, and city, and the figures on all three have to reconcile to the same books and to each other, because a mismatch across them is a classic trigger for a notice. We prepare the three as one coordinated filing, and the federal S corporation return is described by the IRS Form 1120-S guidance.
How the S election drops the UBT but not the city corporate tax
The reason many New York City sellers incorporate as an S corporation is the Unincorporated Business Tax, the 4 percent city tax that hits sole proprietors and partnerships on their business income. An S corporation is not an unincorporated business, so it falls outside the UBT, and that is a real saving on a profitable store. But the corporate return is where sellers learn the saving is a swap, not a clean escape, because New York City does not exempt the S corporation, it taxes it under a different heading. The city imposes its General Corporation Tax on S corporations, computed on city-allocated income, and the state imposes its own corporate franchise tax, so the store trades one city tax for another. The point of running the analysis is that the corporate taxes are usually smaller than the UBT plus self-employment tax the store was paying as a sole proprietor, which is what makes the move worthwhile, but only a real calculation on your numbers proves it. Consider a store netting $150,000. As a sole proprietor it faced the 4 percent UBT above the exemption plus 15.3 percent self-employment tax on the whole profit. As an S corporation it pays the city General Corporation Tax and the state franchise tax on the corporate income and payroll tax only on a reasonable salary, and the combined bill is typically several thousand dollars lower. We compute the city and state corporate tax correctly on the return so the intended saving actually shows up, and the city tax on S corporations is set out on the NYC Department of Finance General Corporation Tax page.
Inventory and COGS on the corporate return
The corporate return lives or dies on cost of goods sold, because for a product business that single line usually moves more tax than anything else. The rule is the same as on any seller’s return but the stakes are concentrated. Buying inventory is not an expense. It is the purchase of an asset that sits on the corporation’s balance sheet until the goods sell, at which point the cost becomes deductible as cost of goods sold. The formula is beginning inventory plus purchases minus ending inventory, and the ending inventory is what a hurried return gets wrong, because it directly reduces the deduction. A store that expenses every purchase reports a fake loss in a stocking year and an inflated profit later, and on a corporate return that error also distorts the state and city corporate tax, not just the federal number. Here is the arithmetic. The corporation starts the year with $70,000 of inventory, buys $300,000, and ends with $90,000 on the shelf. Cost of goods sold is $70,000 plus $300,000 minus $90,000, which is $280,000. On $560,000 of sales that leaves $280,000 of gross profit before operating expenses. A return that instead deducted the full $300,000 of purchases overstated the deduction by $90,000 and understated corporate income by the same, which in New York City draws state and city corporate tax plus penalties once it is unwound. Landed cost adds a layer for importers, because customs duties and inbound freight belong in inventory value. We build the COGS schedule from the store’s reconciled books through our bookkeeping so the corporate return starts from a real number, and the inventory and accounting-method rules are in IRS Publication 538.
Sales tax collected, corporate minimums, and staying in good standing
Two things surprise sellers when they see a corporate return for the first time. The first is how sales tax is treated. The sales tax you collect from customers is never your revenue. It is money you hold as a trustee for the state and hand back to it, so on the corporate return it is a liability that flows in and out, not income and not an expense. A store that mistakenly books collected sales tax as revenue inflates its gross receipts and overstates its income, and a store that spends that money before remitting it creates a real cash shortfall when the sales-tax return comes due. Keeping the collected tax segregated and off the income statement is a basic requirement we handle through our tax compliance work. The second surprise is the minimum tax. New York State’s corporate franchise tax carries a fixed-dollar minimum tied to New York receipts, and New York City’s corporate tax carries its own minimum, so an incorporated store owes the state and city something even in a year it lost money. A pre-profit store with a federal loss on its 1120-S still writes checks to Albany and the city for the minimums, each ranging from a few hundred to a few thousand dollars depending on receipts. Missing those filings does not save the money, it adds penalties and can cost the corporation its good standing, which stalls anything that depends on it. We compute the minimums, file the state and city returns on time even in a loss year, and keep the sales-tax liability correctly off the income line, coordinating the planning with our tax strategy consulting. The state corporate tax is administered by New York State Corporation Tax.
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Frequently Asked Questions
Which corporate return does a New York City ecommerce seller file, the 1120 or the 1120-S?
Which corporate return a New York City ecommerce seller files depends entirely on the tax election the business has made, and the difference between the two returns is the difference between one layer of tax and two. A store organized as a corporation, or an LLC that has elected to be taxed as one, files either Form 1120 as a C corporation or Form 1120-S as an S corporation, and those are very different animals even though both are called corporate returns.
The Form 1120-S is what most owner-operated ecommerce stores file, because the S corporation is a pass-through entity. The corporation itself generally pays no federal income tax. Instead it files the 1120-S as an information return, calculates the business income, and passes that income out to the shareholders on a Schedule K-1, where the owner reports it on a personal 1040 and pays the income tax there. The appeal is that the profit is taxed once, at the owner level, and that a reasonable-salary-plus-distribution structure can cut self-employment tax, which is the main reason a profitable seller incorporates and elects S status in the first place.
The Form 1120 is the C corporation return, and here the corporation is a taxpayer in its own right. It computes its income and pays federal tax at the flat 21 percent rate. Then, when it distributes profit to the owner as a dividend, the owner pays tax again on that dividend, which is the double taxation that makes the C corporation less common for a small single-owner store. There are still reasons a store might choose C status. A seller planning to raise outside investment often needs the C corporation because venture investors expect it, a store that wants to retain earnings to fund inventory rather than pay them out avoids the second layer as long as the money stays inside, and the qualified small business stock exclusion under Section 1202 is only available to C corporation shareholders, which can matter if a sale is on the horizon. For a typical owner-operated seller, though, the S corporation remains the usual answer.
Here is what the choice looks like in numbers. Suppose the store earns $150,000 of profit. As an S corporation filing the 1120-S, none of that is taxed at the corporate level federally, it passes to your 1040, and you pay income tax on it there while only your reasonable salary carried payroll tax. As a C corporation filing the 1120, the corporation pays 21 percent, roughly $31,500, and if it then distributes the remaining profit to you as a dividend, you pay dividend tax on top, so the same $150,000 is taxed twice. For most sellers the 1120-S path leaves more money in hand, which is why the election matters as much as the return.
Whichever federal return applies, a New York City store also files a New York State and a New York City corporate return, and all of them must reconcile to the same books. We determine the right structure and file the federal, state, and city returns together, tying the choice back to our entity formation and structuring service. The S corporation return is described in the IRS Form 1120-S guidance, and the C corporation return in the IRS Form 1120 guidance.
Does an S-corporation ecommerce seller still owe New York City tax on the corporate return?
Yes, an S-corporation ecommerce seller still owes New York City tax on the corporate return, and understanding this is what keeps the S election from being oversold. The reason a seller incorporates and elects S status in New York City is usually to escape the Unincorporated Business Tax, the 4 percent city tax that lands on sole proprietors and partnerships. The S corporation does escape the UBT, because it is not an unincorporated business. But New York City does not simply let the S corporation go untaxed. It taxes it under a different heading, the General Corporation Tax, so the corporate return still carries a city bill.
This is best understood as a swap rather than an elimination. As a sole proprietor, the store’s income ran through the UBT at 4 percent above the exemption. As an S corporation, that same income runs through the New York City General Corporation Tax instead, computed on the income the store allocates to the city, and separately through the New York State corporate franchise tax. So the city still gets a corporate tax, just under a different name and a different computation. The federal pass-through treatment, where the profit is taxed on your personal return rather than at the corporate level, does not carry over cleanly to the city, which taxes the S corporation as a corporation.
The reason the swap is still worth doing is that the corporate taxes are usually smaller than the combination the sole proprietor was paying, and the S corporation also cuts self-employment tax by splitting income into salary and distributions. So the analysis is not UBT versus nothing, it is UBT plus 15.3 percent self-employment tax versus the General Corporation Tax plus payroll tax on a reasonable salary, and for a profitable store the second combination usually wins. But it wins by a margin that only a real calculation reveals, which is why the corporate return should be modeled against the sole-proprietor alternative rather than assumed to be cheaper.
Here is the comparison on real figures. Suppose the store nets $150,000. As a sole proprietor, it owed roughly 4 percent UBT on the income above the exemption, call it $5,500, plus about $21,000 of self-employment tax on the full profit before adjustments. As an S corporation paying a $75,000 reasonable salary, the payroll tax on the salary is about $11,500, the distributions escape self-employment tax, and the New York City General Corporation Tax and New York State franchise tax on the corporate income are computed on the return, often totaling less than the UBT did. The combined New York and federal saving frequently runs several thousand dollars a year, which is the whole point, but the city tax has not disappeared, it has changed form.
We compute the New York City and New York State corporate tax accurately on the return so the real saving shows up and nothing is missed, coordinating the compensation split with our tax strategy consulting service. The city tax on S corporations is explained on the NYC Department of Finance General Corporation Tax page, and the state corporate tax by New York State Corporation Tax.
How is cost of goods sold handled on an ecommerce corporate return?
Cost of goods sold is the single most important calculation on an ecommerce corporate return, because for a product business it usually determines more of the tax than every operating expense combined, and getting it wrong distorts the federal, state, and city corporate tax all at once. The governing principle is that buying inventory is not a deductible expense. When the corporation spends money to acquire product, it has not incurred a cost against income, it has swapped cash for an asset that sits on the balance sheet as inventory. That asset only becomes a deduction, as cost of goods sold, when the specific units are actually sold to a customer.
The mechanics run through a formula that the corporate return depends on. Cost of goods sold equals beginning inventory, plus purchases during the year, minus ending inventory. The beginning inventory is last year’s ending figure. Purchases are what the corporation bought during the year. Ending inventory is the cost of the product still unsold on the last day of the year, and it is the number a rushed return most often gets wrong, because it directly reduces the deduction. Every dollar of ending inventory is a dollar that is not deductible yet, so undercounting the shelf overstates the deduction and understates the tax, while overcounting it does the reverse.
For a corporation the consequences of a mistake are broader than for a sole proprietor, because the error flows into three returns. An overstated cost of goods sold understates the corporate income on the federal 1120 or 1120-S, and because New York State and New York City compute their corporate tax from that same income, the error understates the state and city tax too. When the mistake is caught, the corporation faces adjustments and penalties at all three levels, which is why the inventory figure has to be right the first time rather than estimated.
Here is a worked example. The corporation starts the year with $70,000 of inventory, buys $300,000 of product during the year, and finishes with $90,000 still on the shelf. Cost of goods sold is $70,000 plus $300,000 minus $90,000, which equals $280,000. On $560,000 of sales, that produces $280,000 of gross profit before operating expenses, a clean and defensible figure. A return that instead deducted the full $300,000 of purchases and ignored the $90,000 still in inventory overstated the deduction by $90,000 and understated corporate income by the same amount, and in New York City the combined federal, state, and city tax cost of that error runs well into five figures once penalties are added. Importers add a layer, because customs duties, freight, and inbound shipping are part of the landed cost that belongs in inventory value, not a separate expense.
We build the cost of goods sold schedule from the store’s reconciled books through our bookkeeping service, so the corporate return begins from an accurate inventory number rather than a guess, and we choose the valuation method deliberately because first-in-first-out and weighted average produce different results when supplier prices move. The inventory and accounting-method rules are in IRS Publication 538, and the broader small-business framework is in Publication 334.
How is collected sales tax treated on an ecommerce seller’s corporate return?
Collected sales tax is treated on an ecommerce seller’s corporate return as a liability, never as revenue, and this is one of the most common places a self-prepared corporate return goes wrong. When your store charges a customer sales tax, that money was never yours to keep. You are acting as a collection agent for the state, holding the tax temporarily until you remit it on your sales-tax return. So the collected tax comes into your bank account and then goes back out to the state, and on the books and the corporate return it should move through a liability account, appearing as neither income nor an expense.
The mistake sellers make is booking the gross amount the customer paid, tax included, as revenue. That inflates the store’s gross receipts on the corporate return by the amount of tax collected, which overstates income and can increase the New York State and New York City corporate tax that is computed from that income. It also makes the return fail to reconcile, because the sales-tax returns the store filed show tax collected and remitted that does not correspond to anything on the income statement. A corporate return that treats sales tax as revenue is both overstating tax and creating a mismatch that invites questions.
There is a cash-flow trap alongside the accounting one. Because the collected sales tax sits in the store’s bank account for weeks or months before it is remitted, it can feel like available cash. A store that spends it, treating it as working capital, finds itself short when the sales-tax return comes due and the state wants its money. This is not the corporation’s money at any point, and spending it is effectively borrowing from the state, with penalties and interest if the remittance is late. Keeping the collected tax segregated, or at least accounted for as the liability it is, prevents the store from spending money it will owe.
Here is a concrete illustration. Suppose over a quarter your store collected $18,000 of sales tax from New York customers on taxable sales. That $18,000 arrived in your bank account bundled with the sale proceeds. On the corporate return, none of it is revenue, none of it is an expense, and none of it touches income. It sits in a sales-tax-payable liability account, and when you file the quarterly New York sales-tax return and remit the $18,000, the liability clears. If instead you had recorded the $18,000 as revenue, you would have overstated the store’s income by $18,000, potentially raising your state and city corporate tax, and if you had spent it during the quarter, you would be scrambling to fund the remittance. Marketplace facilitator sales, where Amazon or Etsy collected and remitted the tax for you, are handled by the platform and should not appear as your collected tax at all.
We keep the collected sales tax correctly off the income line and reconciled to what was remitted, as part of our tax compliance service, so the corporate return reports real revenue and reconciles to the sales-tax filings. The IRS explains the treatment of taxes a business collects in Publication 334, and New York’s sales-tax remittance rules are administered by New York State Sales Tax.
Does an ecommerce corporation owe New York tax on the corporate return in a loss year?
Yes, an ecommerce corporation in New York City generally owes tax on the corporate return even in a year it lost money, because both New York State and New York City build fixed-dollar minimum taxes into their corporate systems that apply regardless of profit. This surprises sellers who reason that no profit should mean no tax, but that logic only holds at the federal level for the income tax itself. The state and city minimums are a cost of existing and operating as a corporation in New York, not a tax on income.
Start with the filing obligation, which is separate from the tax. An incorporated store must file its federal 1120 or 1120-S, its New York State corporate franchise return, and its New York City corporate return every year it exists, whether or not it made money. Skipping a return because nothing seems owed is itself a problem, because the state and city expect the filing and will pursue a non-filer, and for an S corporation the return is also how the loss is reported and passed through to the owner. Filing is not optional in a loss year.
Then come the minimum taxes. New York State’s corporate franchise tax is computed several ways, and the taxpayer effectively pays the highest, one of which is a fixed-dollar minimum tied to New York receipts. So a store with a loss on its business income still owes that fixed-dollar amount, which scales with the store’s New York receipts rather than its profit. New York City’s corporate tax similarly carries a minimum. Neither depends on the store having been profitable, so a pre-profit or down-year store still writes checks to Albany and to the city.
The practical effect is that a New York City ecommerce corporation has a floor on its state and city tax that it cannot get under by losing money. A seller who has budgeted only for federal income tax, and assumes zero because the store ran at a loss, is caught off guard when the state and city returns produce a bill anyway. The amounts are not usually large in a single year, ranging from a few hundred to a few thousand dollars each depending on receipts, but they are real, and missing the filings that report them adds penalties on top.
Here is the concrete picture. Suppose your incorporated store had a rough year and posted a $30,000 loss. Federally, you file the 1120-S, report the loss, and it passes through to your personal return with no corporate income tax due. But New York State still wants its fixed-dollar minimum, which might run a few hundred dollars given your receipts, and New York City still wants its minimum corporate tax, another few hundred to a few thousand depending on the numbers. So the store that lost $30,000 still remits something to the state and the city, and it must file all three returns to stay in good standing. We compute the state and city minimums, file every return on time even in a loss year, and keep the corporation in good standing so nothing stalls a loan or a sale, coordinating the planning with our tax strategy consulting service. The state corporate tax is administered by New York State Corporation Tax, and the city corporate tax by the NYC Department of Finance.