Account Stated Claims in New York: When Unpaid Invoices Become a Separate Collection Claim

Account Stated Claims in New York: When Unpaid Invoices Become a Separate Collection Claim

A business completes work, sends invoices, and waits for payment. The customer does not immediately dispute the charges. Months pass. Perhaps the customer pays part of the balance, promises to pay later, or simply stops responding.

That fact pattern can support an ordinary breach of contract claim. In New York, it may also support a distinct cause of action known as an account stated.

An account stated is useful in New York business litigation because it focuses on what happened after the underlying transactions: whether an account was rendered, whether the debtor received it, whether the debtor objected within a reasonable period, and whether the parties’ conduct supports an agreement concerning the balance.

The doctrine is powerful, but it is not a shortcut around proving that a real debtor-creditor relationship existed.

What Is an Account Stated?

The Appellate Division, Second Department, recently described an account stated as an express or implied agreement between parties who have had prior transactions concerning the correctness of account items and a specific balance due. It also emphasized that an account stated assumes some existing indebtedness between the parties or an express agreement to treat a statement of debt as an account stated.

That distinction matters.

A business cannot create a debt merely by mailing an invoice to someone who never owed it money. There must be an underlying relationship or transaction from which an account can be stated.

A contractor who performed agreed work, a vendor that supplied goods, or a professional who provided services may have that relationship. The later account stated concerns assent to the balance, not creation of a completely new transaction from nothing.

Silence Can Matter, but It Is Not Automatically Assent

A common formulation of the doctrine is that receipt and retention of invoices without timely objection can support an implied agreement that the account is correct.

The Second Department reiterated in 2026 that an agreement may be implied where a defendant retains bills without objection for a reasonable period or makes partial payment. The court also emphasized that whether the period was sufficient to imply assent is ordinarily a factual question unless only one inference is rationally possible.

That means there is no universal rule that silence for a specified number of days automatically creates an account stated.

The circumstances matter:

• how invoices were normally sent;
• whether the parties had an established course of dealing;
• whether the debtor had previously objected to similar invoices;
• whether the debtor requested corrections or backup;
• whether partial payments were made;
• whether communications acknowledged the outstanding balance; and
• when any objection was actually raised.

The analysis should be factual rather than mechanical.

Proving Receipt of the Invoice Can Be Critical

A plaintiff cannot rely on a debtor’s failure to object to an invoice that the plaintiff cannot prove was received.

That issue appears repeatedly in account stated litigation.

The Appellate Term, applying Second Department authority in 2025, explained that a plaintiff must establish submission, receipt, and retention of invoices without objection for an unreasonable period. Evidence of mailing must be supported by personal knowledge, proof of regular office mailing procedures, business records, or other competent evidence.

For a business seeking to collect receivables, this has a practical implication: invoicing systems should preserve evidence.

Useful records may include:

• the invoice itself;
• email transmission records;
• automated billing logs;
• proof of mailing;
• customer portal records;
• delivery confirmations;
• follow-up correspondence; and
• communications referring to the particular invoice.

A well-organized billing history can become litigation evidence.

Partial Payment Can Be Important Evidence

Partial payment can support an inference that the debtor accepted the account.

That does not mean every payment conclusively establishes every remaining charge. Context still matters. A debtor may identify a payment as covering only undisputed items, or may pay while expressly contesting other amounts.

But a pattern in which invoices are sent, payments are repeatedly made, and no contemporaneous objection is raised can be significant.

The Second Department has continued to recognize partial payment as one of the circumstances from which assent may be implied.

For plaintiffs, the payment history should therefore be documented carefully. For defendants, any payment made while disputing part of the account should be accompanied by clear contemporaneous communication identifying what remains contested.

A Timely Objection Can Defeat the Inference

The debtor’s response to an invoice is often the central issue.

An objection does not necessarily need particular magic words. The relevant question is whether the debtor communicated a genuine disagreement with the charges or balance.

A customer who promptly says that labor hours are incorrect, goods were never delivered, a credit was omitted, or the invoice exceeds the agreed contract price has created a very different record from a customer who remains silent for months and objects only after suit is filed.

In Kopelevich & Feldsherova, P.C. v Art of Healing Medicine, P.C., the Second Department held in 2026 that although the plaintiff made a prima facie showing on account stated, the defendants raised a triable issue concerning whether their conduct constituted a timely objection.

For businesses on both sides of a commercial relationship, contemporaneous communication is therefore important.

Account Stated and Breach of Contract Can Be Pleaded Together

A plaintiff with unpaid invoices may have both a contract theory and an account stated theory.

They focus on related but different facts. Breach of contract asks whether an enforceable agreement existed, what each side was obligated to do, whether the plaintiff performed, whether the defendant breached, and what damages resulted.

Account stated focuses on the later agreement – express or implied – concerning the correctness of an account and the balance due.

New York courts recognize account stated as an alternative theory of liability in appropriate cases. Recent Second Department authority continues to analyze breach of contract and account stated as separate causes of action arising from the same commercial relationship.

The pleading should nevertheless be based on the actual facts. Adding an account stated label to every invoice dispute does not make the doctrine applicable.

An Invoice Cannot Manufacture Liability Against the Wrong Party

One recurring problem in business disputes is identifying the correct debtor.

A vendor may communicate with a parent company, affiliate, employee, manager, or property owner even though another entity signed the contract. Sending invoices to a related business does not automatically make that business liable.

The doctrine presupposes prior transactions between the parties and an agreement concerning the amount owed.

That is why the contract, purchase orders, correspondence, entity names, and course of performance should be reviewed before suit. A business should not assume that the entity that answered the collection email is necessarily the party that owes the debt.

The same concern applies to trade names. The legal entity behind a doing business as name should be identified accurately in the pleadings.

Businesses Should Build an Evidentiary Record Before Litigation

For a creditor, the strongest account stated case often begins long before the complaint is filed.

Invoices should describe the goods or services with enough clarity to connect them to the transaction. Billing should be consistent. Follow-up communications should identify the amount due. Payment records should be preserved.

If the debtor disputes the charges, the creditor should preserve the objection rather than act as though it never occurred. A real objection may weaken an account stated theory, but it also tells counsel what the breach of contract dispute will be about.

For a debtor, disputes should be made promptly and specifically. Silence can become evidence. A general statement such as we are looking into it may not communicate the same thing as a clear objection identifying disputed charges.

Commercial recordkeeping therefore has direct litigation value.

What Happens When the Case Reaches Summary Judgment?

Account stated claims are frequently litigated on summary judgment because the documentary record can establish or defeat the inference of agreement.

The moving plaintiff needs competent evidence of the relevant invoices, receipt, lack of timely objection, and the balance claimed.

The defendant may respond with emails, letters, testimony, payment records, or other evidence showing that the account was disputed.

The key question is not whether one side can point to an invoice. It is whether the evidence establishes an agreement concerning the account or leaves a factual dispute requiring trial.

That is why a business should not wait until motion practice to reconstruct how invoices were transmitted and whether objections were raised.

When to Speak With a New York Business Litigation Attorney

An account stated analysis is particularly useful when a business has a series of unpaid invoices, an established billing relationship, partial payments, or a customer that stopped communicating without making a contemporaneous objection.

The first review should include the underlying contract, invoices, proof of transmission, payment history, communications concerning the balance, and any objection made by the customer.

For businesses in Suffolk County, Hampton Bays, the East End, and throughout Long Island, additional information about William G. Goode’s litigation practice is available on his attorney profile, and the firm can be reached through its contact page.

References

1. Palisades Cleaning Services, Inc. v Bagatelle Little West 12th, LLC, 2026 NY Slip Op 00382, Appellate Division, Second Department.
2. Kopelevich & Feldsherova, P.C. v Art of Healing Medicine, P.C., 2026 NY Slip Op 01043, Appellate Division, Second Department.
3. Bank of America, N.A. v Ball, 2025 NY Slip Op 04537, Appellate Division, Second Department.
4. Law Offices of Tricia S. Lindsey, P.C. v Swain, 2025 NY Slip Op 25124.

Short FAQ

Is an account stated the same thing as breach of contract?

No. The claims can arise from the same relationship, but account stated focuses on agreement concerning an account and balance after prior transactions.

Does keeping an invoice automatically mean I agreed to it?

No. Retention without timely objection can support an inference of assent, but whether it does so depends on the circumstances.

Can partial payment support an account stated claim?

Yes. Partial payment can be evidence that the debtor accepted the correctness of an account, although the surrounding communications still matter.

What if I objected to the invoice?

A timely and genuine objection can prevent the creditor from relying on silence as evidence of assent. The timing and substance of the objection should be documented.

Can a business create an account stated simply by sending an invoice?

No. The doctrine assumes prior transactions or an existing indebtedness between the parties. An invoice alone cannot manufacture liability where none existed.

Disclaimer

This article is for general informational purposes only and is not legal advice. Reading this article does not create an attorney-client relationship. Civil and commercial disputes are fact-specific, and businesses and individuals should consult with an attorney regarding their particular circumstances. Prior results do not guarantee a similar outcome. This may be considered attorney advertising.