The Comptroller is Maryland’s tax administration, and for a small business it means three things: sales and use tax, employer withholding, and the filings that go with both.
Sales and use tax
A business selling taxable goods, or one of the specifically listed taxable services, registers for a sales and use tax license. It is free and issued on registration.
What it brings with it is a filing obligation. Returns are due on an assigned frequency: monthly, quarterly or annually, depending on the size of the liability, and the assignment can change as the business grows.
A zero return is still a return. This is the point at which more small businesses fall out of compliance than any other. A seasonal business with no sales in a quarter, or one that paused trading, still files. Penalties for failing to file accrue independently of whether tax was owed.
Taxable or not
Goods are generally taxable; services generally are not, with a defined list of exceptions. Because the list is specific rather than principled, the reliable approach is to confirm the treatment of your particular service with the office directly, not reasoning by analogy.
Getting this wrong is assessed retroactively, with interest, which makes an early phone call inexpensive by comparison.
Employer withholding
An employer registers here to withhold and remit Maryland income tax from wages, alongside the federal obligations and the unemployment insurance registration covered on the hiring and managing employees page.
Withholding is remitted on an assigned schedule and reconciled annually. Payroll services handle this mechanically, which is the main argument for using one.
Which office is which
This is worth stating because the two state offices are constantly confused.
The Comptroller taxes activity: sales, withholding, income.
The Department of Assessments and Taxation charters the entity, registers trade names, assesses property, and collects the annual report.
An entity in good standing with one is not necessarily in good standing with the other, and they do not fix each other’s problems.
If something goes wrong
Two pieces of practical advice from how these situations usually develop.
File even when you cannot pay. Failure to file and failure to pay are treated differently, and the first is treated more seriously. Payment arrangements exist and are routine; an unfiled return is an open-ended liability that grows.
Deal with a notice when it arrives. Tax notices escalate on a schedule, and the options available at the first notice are broader than the options available after a lien. The office is reachable and the earliest conversation is always the most productive one.
Collecting and remitting sales tax
The mechanics matter because the money is never the business’s own.
Tax is collected from the customer at the point of sale and held until remitted. Businesses that treat it as revenue and spend it discover the problem at the filing date, and it is among the most common causes of a small business falling into serious tax difficulty.
The discipline that prevents it is mechanical: move the collected tax into a separate account at the same frequency as the takings are banked. It is not required and it works.
Exemption certificates
A business selling to an exempt purchaser (a resale, a nonprofit with an exemption, certain government purchases) does not charge the tax, but must hold a valid exemption certificate from the buyer.
The obligation is the seller’s. Without the certificate the seller is liable for the tax that was not collected, regardless of whether the buyer was genuinely exempt. Collect the certificate at the first transaction, keep it, and review the file periodically.
Use tax, which businesses forget
The counterpart of sales tax. Where a business buys taxable goods and the seller did not charge Maryland tax, typically an out-of-state or online purchase: the business owes use tax on it directly.
Equipment, supplies and furniture bought from out-of-state suppliers are the common cases. It is reported on the same return, and it is the item most often omitted by businesses that are otherwise compliant.
Dealing with the office
Two practical observations from how these matters generally develop.
The office is reachable and its staff answer questions about whether something is taxable, which is a better source than inference from a similar case. A call before the first sale of a new product line is inexpensive insurance.
And notices escalate on a schedule. The options available at the first letter are broader than those available after a lien, and the earliest response is always the most productive one. The financing fundamentals page notes that unresolved tax debt is among the most common reasons a lending application is declined, which is another reason not to let one sit.
Closing an account you do not need
An account opened unnecessarily produces a filing obligation indefinitely, and zero returns still have to be filed.
A business that registered for sales and use tax and sells nothing taxable should close the account rather than file empty returns for years. It is a straightforward request and it removes a recurring way to fall out of compliance for no reason.