Sales Tax Collected Is a Liability, Not Revenue

Why this matters

Every other figure a shop watches describes money the shop owns. This one does not. In every state where you have nexus and are registered, it is money collected from a customer on behalf of that state's taxing authority and held until it is handed over, and it sits in the same bank account as everything else, which is exactly why shops spend it. Whether work across a state line has created that duty for you is the nexus question the card named below owns, and it is worth settling before any of the arithmetic here matters. The failure is rarely dishonest and it is almost never noticed in the quarter it happens. It shows up when a filing comes due and the money that was supposed to be sitting there has already gone out as payroll.

What the figure is made of

Tax billed on paid invoices inside the window, less the tax portion of goodwill credits and returns issued in that same window.

Two details in that sentence do real work. The first is that it nets credits. If you credit back a taxed sale, the tax on that sale is refundable too, so the liability that accrued when you billed it is reversed when you credit it. A figure that counts only gross tax billed will always overstate what you owe, by exactly the tax on whatever you gave back.

The second is the anchor. This version is keyed to paid invoices, which means it follows collection rather than billing. Whether your own obligation accrues when you invoice or when you collect depends on the accounting basis your jurisdiction assigns you, and the two produce different totals in any window where receivables move, so check which basis you are on before you reconcile anything against a filing. If your obligation accrues at invoicing and your figure is keyed to collection, the two will disagree by the tax sitting inside your unpaid invoices, permanently and correctly, and chasing that gap is wasted effort.

It is not your tax rate

Take one quarter and index the shop's tax-exclusive collected revenue to 100 units, so every figure below is directly comparable as a share of that same quarter's collections.

Suppose about 70 percent of the billed lines are taxable in that state and the blended rate across those lines is about 6 percent. Tax billed on paid invoices is 0.06 of 70 units, or 4.20 units. In the same quarter the shop issued goodwill credits worth 3 units, all of them against taxed sales, so the tax to reverse is 0.06 of 3 units, or 0.18 units. Net sales tax collected is 4.20 less 0.18, which is 4.02 units.

That is about 4 percent of the quarter's tax-exclusive collected revenue, against a blended rate of 6 percent on the taxable lines. The two figures differ because the bases differ: 6 percent is charged on the taxable 70 units and 4 percent is the same money expressed against all 100 units of collections. An owner who reads 4 percent as the rate concludes the shop has been undercharging tax and goes looking for a configuration error that is not there.

Note also what moves this share without the rate changing at all. A quarter heavy in non-taxable work drops it. A quarter heavy in materials, where those are taxed and labor is not, raises it. The share is a mix indicator wearing a tax rate's clothes, and it is worth watching for exactly that reason, as long as nobody mistakes it for the rate.

What happens when it gets added to revenue

The common version of this mistake is not deliberate. Somebody exports invoice totals, and invoice totals are tax-inclusive.

Carry the same quarter through. True collections are 100 units and the tax is 4.02 units, so the tax-inclusive total reads 104.02 units and revenue is overstated by about 4 percent. Now suppose the quarter's cost of work is 62 units. The true gross margin is 100 less 62, or 38 units, which is 38.0 percent of the 100 units of true collections. Computed the wrong way, gross profit reads 104.02 less 62, or 42.02 units, which is 40.4 percent of the 104.02 units of tax-inclusive revenue. The reported margin is 2.4 points high.

A 2.4-point error in gross margin is enough to make a job type look healthy when it is marginal, and it is enough to hold a price where it is for another year. The error runs in the flattering direction every time, because tax only ever adds to the total.

The same 4 percent lands on average ticket, which reads about 4 percent above its tax-exclusive value. That makes any comparison of average tickets across a state line partly a comparison of tax regimes, and it makes a shop that moved from a lower-tax jurisdiction look like it raised its prices.

What it is doing in your bank account

The money is genuinely there. That is the trap, not a figure of speech.

A shop filing quarterly holds up to a full quarter of collected tax at peak: about 4 units against 100 units of that quarter's collections. Set that beside a net margin of, say, 8 percent of the same quarter's collections, and the tax being held is about half the quarter's entire net profit, both stated as shares of the same base. Spend it and the shortfall is not a bad quarter to be absorbed. It is money that was never the shop's, now owed, generally with interest and penalty on top.

The practical habit is simple and it is the one thing that removes the risk: watch it as a liability accruing against a filing date, not as a line on a performance report. A separate holding account, funded on the same rhythm the returns are filed on, converts a discipline problem into a transfer that either happened or did not.

Reconciling accrued against remitted

Two figures, one comparison, every filing period: what accrued in the period against what was actually remitted for that period.

Run the example quarter. Accrued is 4.02 units. The return was prepared from a gross billing report that did not net the credits, so 4.20 units was remitted. The gap is 0.18 units over-remitted, which is 4.5 percent of the 4.02 units accrued.

The gate, and it runs one way only: where you remitted MORE than accrued, a gap under about 1 percent of the accrued figure is usually rounding plus basis timing and can wait for the next return, and anything above that gets traced to specific invoices or credits before that return is filed; where you remitted LESS, there is no tolerance at all, because the shortfall is tax you collected and are holding, states generally assess penalty and interest on it from the original due date regardless of size, and in many states a responsible person is personally liable for it, so any under-remittance gets traced to the invoice or credit that caused it before the next return is filed, however small it looks. At 4.5 percent and on the over side, this quarter fails that gate and takes the action, and the trace lands on one cause in about ten minutes, because the gap equals the credits' tax portion to the unit.

The direction also decides the remedy. Remitting more than accrued, as here, usually means the return was built from a gross figure or a credit was missed, and whether that is recovered on a later return or needs the return amended is set by the taxing authority's own instructions, which differ enough that it is a question to put to them or to your accountant rather than to assume. Remitting less means either tax was collected and not handed over, or something taxable was reported as exempt, and both get worse with time.

What varies, and what does not

Almost every specific in this area is jurisdictional, so treat the following as the shape of the obligation rather than as rules:

• Registration comes first in every state where you have nexus, and while collecting tax without a permit is generally a worse position than not collecting at all, switching the charge off does not cure it. Where you have nexus the tax is owed whether or not you billed the customer for it, so register, and put the already-collected period to your state revenue department or your accountant rather than quietly stopping.
• Filing frequency is assigned by the authority and revised as your volume changes, so it is not a setting you choose and it can change without you asking.
• A return is usually due for every assigned period whether or not you collected anything, so a quiet quarter is still a filing in most places that require one.
• What is taxable is the hardest part and the most variable: labor against materials, a repair against a capital improvement to real property, and whether you are treated as a contractor consuming materials or as a retailer selling them. That question has its own card, named below.
• Penalties are generally assessed on the tax plus interest, which is why a shortfall behaves differently from an ordinary business loss.

What does not vary is the principle underneath all of it: the money is held, not earned, and no accounting basis or filing frequency makes it yours.

Where this number belongs and where it does not

The rule that makes the table memorable: a figure describing what the work earned never includes it, and a figure describing what is owed, held or physically present always does. If you are unsure which kind a report is, ask whether the number would change if the state changed its rate tomorrow with nothing else different. If it would, and it is supposed to describe your work, the tax is in there and should not be.

References

• See related: Sales Tax for Service Businesses, which owns the taxability question and the contractor classification
• See related: Sales Tax Nexus and Multi-State Work
• See related: What Average Ticket Actually Measures and What It Hides
• Your state revenue department's own filing instructions, and a tax professional for the taxability and basis questions, which vary by state and by the kind of work