For most small businesses, an unpaid invoice is not an abstract legal issue. It is payroll that is harder to make, a vendor you now have to stall, and time spent chasing money you already earned. Late and unpaid receivables are one of the most common and most corrosive problems a business faces, and the instinct to simply keep sending reminders and hoping is usually the most expensive approach of all.

The good news is that collecting a business debt in Maryland follows a clear, escalating path. Most of the time you do not need to start with a lawsuit, and often you should not. A disciplined process, beginning with practical follow-up, moving to a formal demand, and proceeding to suit and enforcement only when necessary, recovers more money at lower cost than either passive waiting or premature litigation.

This guide walks through that path step by step under Maryland law: the practical first moves, the deadline you cannot miss, what you are allowed to add to the balance, how to write a demand that works, the collection rules you have to follow, how and where to sue, how to turn a claim into a judgment, and, most importantly, how to actually collect once you have one. It is written for Maryland business owners by Iqbal Business Law, which represents companies pursuing and defending business debts across Maryland.

Before involving a lawyer or a court, a handful of practical steps resolve a large share of overdue invoices. They cost little, preserve the business relationship, and build the record you will need if the matter does escalate.

• Confirm the terms and the math. Pull the contract, purchase order, and invoice. Verify the amount, the due date, what was delivered, and whether your own obligations were met. A debtor who can point to a delivery problem or a billing error has a defense, so make sure your claim is clean before you press it.
• Send a clear statement and reminder. A simple, unambiguous reminder that states the amount, the original due date, and how to pay resolves many honest oversights. Keep it professional and dated.
• Pick up the phone. A direct, courteous conversation often surfaces the real issue, whether it is a cash-flow crunch, a dispute, or a lost invoice, and lets you solve it.
• Offer a payment plan in writing. Partial payment on a schedule is usually better than a standoff. If you agree to a plan, document it, and have the debtor sign it.
• Preserve everything. Save the contract, invoices, delivery confirmations, emails, and texts. Contemporaneous records are the backbone of any later demand or lawsuit.

A statute of limitations is a hard deadline to file suit. Miss it and a court will dismiss the case no matter how clearly the debt is owed. For most unpaid invoices, Maryland’s general deadline is three years, measured from when the claim accrues, which is usually the date payment was due and not made, under Md. Code, Cts. & Jud. Proc. Section 5-101. This applies to both written and oral agreements.

Two categories carry different deadlines. A contract for the sale of goods is governed by the Uniform Commercial Code’s four-year period, although the parties may reduce that period by original agreement to not less than one year and may not extend it. And a contract executed under seal, a specific legal formality, carries a twelve-year deadline under Section 5-102. Because the same broken promise to pay is, at bottom, a breach of contract, the analysis tracks the rules covered in our guide to breach of contract in Maryland and Pennsylvania.

Do not assume a later payment, promise to pay, or acknowledgment will save an aging claim. For Maryland consumer debt, once the statute of limitations expires, a later payment, written or oral affirmation, or other activity on the debt does not revive or extend the limitations period. Commercial debts may raise different issues depending on the facts and documents, but the safest approach is to treat the original payment due date as the working deadline and file suit before limitations expires. If an account is aging, have counsel confirm whether it is still timely before you spend money pursuing it.

Business owners often assume they can tack interest, late fees, and their legal bill onto an overdue balance automatically. In Maryland, that is generally true only if your contract or invoice terms provide for it.

Interest before judgment

If your agreement sets an interest rate or finance charge for late payment, that rate controls, subject to Maryland’s credit and usury rules. If your agreement is silent, Maryland’s default legal rate of interest is six percent per year under Article III, Section 57 of the Maryland Constitution. Maryland also allows pre-judgment interest on a liquidated sum, such as a fixed invoice amount due on a set date, which can be a meaningful addition by the time a case is resolved.

Late fees and finance charges

A late fee or finance charge is enforceable when it is set out in the written agreement and complies with Maryland law governing interest, credit, and, where the customer is a consumer, consumer-protection limits. A late fee that functions as a disguised penalty rather than a reasonable charge invites a challenge, so the terms should be clear and reasonable from the outset.

Interest after judgment

Once you obtain a judgment, post-judgment interest generally accrues at ten percent per year on the amount of the judgment under Md. Code, Cts. & Jud. Proc. Section 11-107, unless a statutory exception applies. For example, a money judgment for rent of residential premises accrues post-judgment interest at six percent per year. That is a strong incentive for a debtor to resolve a judgment rather than let it sit.

Attorney’s fees

Maryland follows the American Rule: each side pays its own attorney’s fees unless a statute or the contract shifts fees to the prevailing party. For collections, this is the single most valuable clause you can include. An invoice or contract that entitles you to recover reasonable attorney’s fees and collection costs changes the economics of every dispute and gives the debtor a reason to pay before fees mount.

When practical follow-up has not worked, a formal demand letter is usually the next step, and frequently the last one needed. A clear, professional demand from a business attorney does several things at once: it states the exact amount owed and a firm deadline to pay, references the contract and invoices, signals that you are prepared to file suit, and creates a documented record of your effort to resolve the matter. For many debtors, a letter on a law firm’s letterhead is the moment the invoice moves to the top of the pile.

An effective Maryland demand letter generally includes:

• The principal amount due, plus any interest, late fees, and costs your contract allows, with a short explanation of how each is calculated.
• A reference to the underlying contract, purchase order, and unpaid invoices.
• A specific deadline to pay or to contact you to arrange payment.
• A clear statement of the next step if the deadline passes, such as filing suit.
• A professional, factual tone, with no threats or language that overstates your rights.

Debt collection is regulated, but the rules that apply depend on whether the debt is commercial or consumer, and on who is doing the collecting. Getting this right protects you from turning a collection effort into a counterclaim.

Business-to-business debt

The federal Fair Debt Collection Practices Act applies to third-party debt collectors collecting consumer debts. It does not cover business-to-business debts, and it generally does not apply to a creditor collecting its own debt. Maryland’s Consumer Debt Collection Act is broader in that it reaches original creditors as well as collectors, but it applies only to debts arising out of a consumer transaction. As a result, these consumer-protection statutes generally do not apply to a commercial, business-to-business invoice. That does not make anything goes: courts still expect honest, lawful conduct, and a contract claim is still subject to the rules of court.

When your customer is a consumer

If the customer is an individual who incurred the debt for personal, family, or household purposes, the analysis changes. Maryland’s Consumer Debt Collection Act can apply even when you are the original creditor, and the federal Act can apply to any third-party collector you use. In that setting, abusive, harassing, or deceptive collection conduct can expose you to damages and attorney’s fees, so the safest course is to keep all communications factual and professional.

If you hire a collection agency

A third-party collection agency that collects in Maryland must be licensed by Maryland’s State Collection Agency Licensing Board. Collecting your own debt in your own name generally does not require a license, but if you outsource collection, confirm the agency is properly licensed before you engage it. You can verify licensing through the Maryland Department of Labor’s collection agency resources.

If a demand does not produce payment, the next step is suit. In Maryland, the court is determined mostly by the amount you are owed.

The claim itself is, in most cases, a straightforward breach of contract: the debtor agreed to pay for goods or services, received them, and did not pay. Depending on the facts, you may also plead related theories such as an account stated (where the parties agreed on a balance due) or a claim for the value of goods or services provided. Because an unpaid invoice is fundamentally a contract dispute, the elements, defenses, and damages line up with those discussed in our breach of contract guide. Before filing, weigh the cost and time of suit against the size of the debt and, crucially, the debtor’s ability to pay, a point addressed below in collecting after judgment.

A surprising share of collection cases never reach a contested trial, because many debtors do not respond once they are served. Maryland provides efficient paths to judgment in that situation.

If the defendant is properly served and does not respond or appear, you can usually obtain judgment without a full trial. In the District Court, a claim for a fixed, liquidated amount, which an unpaid invoice typically is, can often be resolved by a judgment on affidavit under Maryland Rule 3-306. You submit a sworn statement of the account along with documentation that proves the debt, and if the defendant does not file a timely notice of intention to defend, the court can enter judgment on the affidavit without requiring you to appear for trial. If the defendant does respond and contest the claim, the case proceeds to a hearing where you present your evidence.

Two practical notes. Heightened documentation requirements apply to purchased consumer debt under Rule 3-306, but an original creditor collecting its own commercial invoice generally has a more straightforward path. And whatever the route to judgment, the judgment should capture everything you are entitled to: principal, contractual or pre-judgment interest, any attorney’s fees and costs your contract allows, and post-judgment interest going forward. The Maryland Judiciary’s overview of judgments and debt collection is a useful reference for the mechanics.

This is the step most people underestimate. Winning a judgment does not put money in your account. It gives you the legal authority to use enforcement tools to reach the debtor’s assets. A judgment against a debtor with no reachable assets can be worth very little, which is why assessing collectibility belongs early in your decision to sue, not after. Maryland’s tools include the following.

Record the judgment and create a lien on real property

A Circuit Court money judgment that is recorded and indexed in the county of entry generally constitutes a lien on the judgment debtor’s real property in that county. A District Court judgment generally requires an additional Notice of Lien process under Maryland Rules 3-621 and 3-622 before it becomes a lien on real property, subject to Baltimore City-specific procedures and other statutory exceptions. Once recorded, the lien clouds the debtor’s title and must usually be paid before the property can be sold or refinanced. A Maryland judgment lien generally lasts twelve years and can be renewed.

Garnish a bank account

You can serve a writ of garnishment on the debtor’s bank, freezing funds in the account up to the amount owed. For a business debtor, bank garnishment is often the most effective tool, because business wages are not at issue and operating accounts can hold meaningful balances.

Garnish wages (for individual debtors)

If the debtor is an individual who earns wages, you can garnish a portion of those wages. Under Md. Code, Com. Law Section 15-601.1, a debtor’s wages cannot be garnished to the extent disposable earnings fall below thirty times the State minimum hourly wage per week, and in any event no more than twenty-five percent of disposable weekly earnings may be taken. Disposable earnings are what remains after legally required deductions. Wage garnishment reaches only individuals, not the wages of a business.

Execute on property

You can obtain a writ of execution directing the sheriff to levy on the debtor’s non-exempt personal property and have it sold to satisfy the judgment. Individual debtors may claim certain Maryland exemptions, so this tool is most productive against business assets or higher-value property.

Find the assets

If you do not know where the debtor banks, works, or holds property, Maryland’s rules let you compel the debtor to disclose assets through post-judgment discovery, including written questions and examination under oath. Locating assets is often the difference between a paper judgment and a paid one.

The hardest collection problem is a judgment against a business that has no assets to take. An LLC or corporation generally shields its owners from the company’s debts, so if your customer is an entity that has spent or never had the money, a judgment against the entity alone may be uncollectible.

The most reliable answer is a personal guarantee. When an owner personally guarantees the company’s obligations, you have a second party, with personal assets and, where applicable, personal wages, to pursue if the business does not pay. This is why significant trade credit should rarely be extended to a thinly capitalized entity without a signed guarantee from someone who actually has assets.

Without a guarantee, your remaining options are narrower. Piercing the corporate veil to hold an owner personally responsible is possible in Maryland but difficult and fact-specific, generally requiring proof of something like fraud or a serious disregard of the corporate form. And if the debtor is winding down, the order in which it pays creditors and distributes assets matters a great deal; our guide on how to close a business in Maryland explains the wind-up and creditor-payment rules from the debtor’s side, which can inform how and when a creditor should press a claim.

The cheapest collection case is the one you never have to bring. A few disciplined practices, built into how you onboard customers and bill for work, dramatically reduce both the number of unpaid invoices and the cost of collecting the ones that remain.

• Use a written agreement with clear payment terms. Define the amount, the due date, and what counts as late. Ambiguity is what debtors exploit.
• Include an interest and late-fee clause. A reasonable, written finance charge encourages on-time payment and lets you recover for the delay.
• Add a prevailing-party attorney’s-fee and collection-cost clause. This single provision reshapes the economics of every dispute in your favor.
• Get a personal guarantee for significant credit. Especially when dealing with new or thinly capitalized entities, a guarantee gives you a collectible target.
• Use a credit application for larger accounts. Basic information about the customer’s legal name, principals, and references helps you assess risk and locate assets later.
• Consider deposits, milestones, or a security interest. Progress payments reduce exposure, and in the right cases a properly perfected security interest can put you ahead of other creditors.
• Invoice promptly and follow up consistently. Prompt, predictable billing and follow-up set the tone that payment is expected on time.

These are drafting and process decisions, and they are far cheaper to get right at the outset than to litigate later. Our post on the most common contract mistakes business owners make covers several of the gaps that lead directly to uncollectible invoices, and contract drafting is where these protections get built in.

For most unpaid invoices, Maryland gives you three years to sue, measured from when the claim accrues, which is usually the date payment was due and not made, under Md. Code, Cts. & Jud. Proc. Section 5-101. There are exceptions. A contract for the sale of goods is governed by a four-year Uniform Commercial Code deadline, and a contract executed under seal carries a twelve-year deadline. Do not let an account sit, and do not rely on partial payments, payment-plan discussions, or acknowledgments to preserve the claim. For Maryland consumer debt, once limitations expires, later payment or affirmation does not revive or extend the limitations period; for commercial debts, the issue can be fact-specific, so the safest course is to treat the original due date as the working deadline.

Late fees, finance charges, collection costs, and attorney’s fees generally need to be authorized by your contract, invoice terms, or a statute. Interest is more nuanced: if the agreement is silent, Maryland’s default legal rate is generally six percent per year, and prejudgment interest may be available on a fixed, liquidated amount due on a specific date. Once you obtain a judgment, post-judgment interest generally accrues at ten percent per year under Md. Code, Cts. & Jud. Proc. Section 11-107, unless a statutory exception applies, such as a six percent rate for a money judgment for rent of residential premises. The lesson is to put your interest rate, late-fee, and attorney’s-fee terms in writing before the work is done, because you generally cannot add them after the fact.

A demand letter is usually not required by law, but it is almost always worth sending, and your contract may require notice before you sue. A clear, professional demand letter from a business attorney states the amount owed and a deadline, documents your effort to resolve the matter, and often produces payment or a payment plan without the cost of litigation. It also signals that you are prepared to file suit. Before sending one, confirm the deadline to sue has not passed and review the contract for any notice, mediation, or arbitration requirements.

Generally no. The federal Fair Debt Collection Practices Act applies to third-party debt collectors collecting consumer debts, and it does not cover business-to-business debts or, in most cases, a creditor collecting its own debt. Maryland’s Consumer Debt Collection Act reaches original creditors as well as collectors, but only for debts arising out of a consumer transaction, so it generally does not apply to commercial, business-to-business debt. If your customer is an individual consumer, both laws can apply. If you hire a third-party collection agency, it must be licensed by Maryland’s State Collection Agency Licensing Board, although collecting your own debt in your own name generally does not require a license. Abusive or deceptive tactics are never worth the risk.

It depends on the amount owed. In Maryland, the District Court hears civil claims up to $30,000, with an informal small-claims track for claims of $5,000 or less, and the District Court does not hold jury trials. Claims over $30,000 must be filed in Circuit Court. Claims above $5,000 but not exceeding $30,000 may generally be filed in District Court or Circuit Court, and if a party is entitled to and requests a jury trial, the case is heard in Circuit Court; jury trial is generally unavailable where the amount in controversy does not exceed $25,000. Most invoice collection cases are brought as breach of contract claims, sometimes alongside related theories such as an account stated. The right court, and the right claim, depend on the size of the debt and the documentation you have.

If the defendant is properly served and does not respond or appear, you can usually obtain a judgment without a full trial. In the District Court, a claim for a fixed, liquidated amount such as an unpaid invoice can often be resolved by a judgment on affidavit under Maryland Rule 3-306, supported by a sworn statement of the account and documentation proving the debt. If the defendant files a timely notice of intention to defend, the case proceeds to a hearing. Heightened documentation rules apply to purchased consumer debt, but an original creditor’s commercial claim is more straightforward.

A judgment is permission to collect, not payment. After the automatic ten-day stay, you can record the judgment and use enforcement tools. A Circuit Court money judgment recorded and indexed in that county is generally a lien on the debtor’s real property there, while a District Court judgment generally becomes a real-property lien once you record a Notice of Lien in the Circuit Court under Maryland Rules 3-621 and 3-622, subject to Baltimore City procedures. You can garnish the debtor’s bank account, garnish a wage-earning individual’s wages within Maryland’s limits, and obtain a writ of execution directing the sheriff to seize and sell property. You can also compel the debtor to disclose assets through post-judgment discovery. A Maryland money judgment is generally enforceable for twelve years and can be renewed.

Usually only if the owner personally guaranteed the debt. An LLC or corporation generally shields its owners from the company’s debts, so if your customer is an entity with no assets, your judgment against the entity may be uncollectible. That is why a personal guarantee from an owner is so valuable: it gives you a second person, with personal assets, to pursue. Piercing the corporate veil to reach an owner without a guarantee is possible but difficult and fact-specific. The practical fix is on the front end: get a signed personal guarantee before extending significant credit.