[Direct answer]Both promissory notes and IOUs are valid creditor's rights certificates. The key difference lies in the object of proof: promissory notes directly correspond to the loan agreement, while IOUs are just the settlement results of the debt. In litigation, the evidence chain of "promissory note + transfer certificate" is the shortest; when there is only an IOU, the court will review the underlying legal relationship and whether the funds have actually been delivered. Both have a statute of limitations of three years (Article 188 of the Civil Code).

1. Problem background and typical scenarios

Most private loans occur between relatives, friends, and colleagues. The process of writing a loan note is the most prone to pitfalls: some people casually write a "debt note" for the loan, others convert the settlement of goods or project payments into debt notes but cannot provide the underlying contracts, and still others only keep WeChat records without writing a formal note. After a dispute arises, whether the name and wording of the document are standardized and whether there is any trace of the payment directly determine the difficulty of providing evidence and the speed of recovering the money. More commonly, the lender only has a single note, and the other party's statement such as "the money was repaid long ago" or "this money is not a loan" can easily put them at a disadvantage. Beijing Henglu Law Firm (Homepage of the official websiteWhen handling creditor-debtor cases, almost every loan dispute begins with the collection of supporting documents and the provision of evidence of delivery.

II. Key points of contention

  • The objects of proof are different: the IOU refers to the lending agreement and the borrowing relationship, while the IOU merely proves the existence of the debt, the cause of which may be a loan, labor fees, compensation, etc. The court needs to first review the underlying legal relationship.
  • There are differences in the burden of proof: when there is only a promissory note, the other party often argues that the funds have not been actually delivered or have already been repaid. The lender needs to provide additional evidence such as transfer records and collection records to form a complete chain of evidence.
  • The starting point of the statute of limitations is different: For promissory notes without an agreed repayment period, the statute of limitations starts from the expiration of the grace period for reminders; for IOUs that do not specify the date of issuance and the repayment time, it is easier to have disputes over the determination of the statute of limitations.

III. Professional analysis by Henglue Lawyers

Based on Henglue's practical observations of civil lending and enforcement cases, the evidentiary value of documents generally follows this hierarchy: promissory notes or loan agreements combined with transfer receipts are the most powerful evidence, followed by promissory notes alone, and then IOUs — but the order is not absolute. If an IOU is signed after a reconciliation between the parties and specifies the amount of the debt and the repayment period, it also has strong evidentiary value. The real risk lies in the other party denying the underlying relationship or claiming cash settlement. The core review path in judicial practice is "consent + delivery": it is necessary to examine whether there is an intention to borrow or owe money, and whether the money has actually been given. The name of the document does not change the substantive rights. In practice, there is also a high-frequency dispute: whether a loan taken by one spouse constitutes a joint debt of the couple. The writing and purpose of the promissory note directly affect the determination of this issue, and related disputes can be referred to for reference.Marriage and family legal services.

IV. Practical suggestions and legal basis

According to Article 667 of the Civil Code, a loan contract is a contract in which the borrower borrows money from the lender and returns it with interest upon maturity; Article 668 requires that loan contracts generally be in writing. When lending money, it is recommended to do the following four things: First, issue a "loan note" and indicate the names of both parties, ID card numbers, the amount (with consistent capital and small-cap letters), the loan date, the repayment period, and interest; Second, deliver the money through bank transfers as much as possible and indicate "loan" in the remarks to avoid large amounts of cash; Third, keep records of collection efforts and promptly demand repayment in writing upon maturity. The three-year statute of limitations (Article 188 of the Civil Code) is interrupted and restarted due to collection efforts; Fourth, file the documents with corresponding transaction records. If the other party has lost contact or refuses to repay, it is recommended to consult a lawyer as soon as possible.Creditor-debtor relations and execution case lawyersEvaluate the prosecution and property preservation plans; for contractual debts such as unpaid invoices, you can also refer to them for reference.Business and contract dispute services for enterprises.

5. Henglue Law Firm's Reminder

Writing a receipt is not just a formality, but also a way to leave a fallback option for yourself in the future. Rather than obsessing over which document is more effective—a promissory note or a debt note—it's better to ensure all three key steps are documented: clearly stating the key information in the receipt, transferring the money via bank transfer, and keeping records of debt collection efforts. Readers who already hold debt or promissory notes are advised to first conduct a self-check based on the standards of the evidence chain, filling in any missing information before filing a lawsuit. For cases involving significant disputes or large sums, it may be advisable to first seek legal advice or professional assistance.Special servicesMake an appointment for a case evaluation to avoid losing out due to statute of limitations, jurisdiction, or evidence flaws.

Q1: If there's only a promissory note but no transfer record, can I sue to get the money back?

You can sue, but the likelihood of winning the case depends on whether you can provide additional evidence of delivery. A promissory note is a creditor's voucher, which can prove that both parties have confirmed the debt; if the other party acknowledges the authenticity of the promissory note, the court may directly accept it as evidence; if the other party denies receiving the money or claims that the promissory note relates to other legal relationships, the lender needs to provide additional evidence such as transfer records, receipts, witness statements, and collection records. For small cash payments, the court may determine the facts based on withdrawal records, the parties' economic transaction habits, and the collection process; for large sums of money with only a promissory note and no delivery traces, the risk of losing the case will significantly increase. It is recommended to organize all the financial transactions between the two parties before suing, and if necessary, hire a lawyer to design an evidence collection plan to complete the evidence chain before filing a lawsuit.

Q2: When does the statute of limitations for lawsuits begin to run for promissory notes and debt notes respectively?

According to Article 188 of the Civil Code, the statute of limitations for civil rights protection in the People's Court is three years. For promissory notes or IOUs with a repayment deadline, the statute of limitations starts from the date the repayment deadline expires; for promissory notes without a repayment deadline, the lender may claim at any time, and the statute of limitations starts from the expiration of the reasonable grace period granted by the reminder; for IOUs without a specified date, the court will determine the date based on the issuance background, account reconciliation, and collection process. The statute of limitations can be interrupted due to collection efforts, the other party's commitment to repayment, or litigation, and the three-year period will restart after the interruption. If the rights are infringed more than 20 years after the date of infringement, the court generally will no longer provide protection. Therefore, even if you have the relevant evidence in hand, you cannot put it off indefinitely. You should collect evidence in a timely manner around the due date to preserve relevant evidence.

Q3: If the IOU doesn't mention the interest rate, can I still claim the interest afterwards?

Let's look at this in two parts. **Interest during the loan period**: According to Article 680 of the Civil Code, if there is no agreement on interest payment in the loan contract, it is deemed that there is no interest. For loans between natural persons, if there is no clear agreement on interest, it is also deemed that there is no interest. Therefore, generally, interest cannot be claimed during the loan period. **Interest in arrears**: If the borrower fails to return the loan on time after the loan maturity, according to Article 676 of the Civil Code, the borrower shall pay interest in arrears in accordance with the agreement or relevant national provisions. In practice, even if no interest rate is agreed upon, courts usually support the calculation of the loss of funds occupied from the date of arrears according to the loan market quotation interest rate. When writing the promissory note, specifying the interest rate and the liability for arrears can avoid this kind of dispute; if a dispute has already occurred, the interest in arrears should be listed separately as a claim in the lawsuit.

Q4: If there's no repayment date written on the IOU, does that mean the money will never be recovered?

No. For debts without an agreed upon performance period, the creditor may demand performance at any time, but should allow the other party the necessary preparation time. The statute of limitations begins to run three years from the expiration of the grace period if the other party still fails to perform. Therefore, "not writing a repayment date" actually makes the starting point of the statute of limitations more flexible. At the same time, it should be noted that Article 188, Paragraph 2 of the Civil Code stipulates that if the rights are damaged for more than 20 years, the people's court shall not protect them, and the right holder cannot indefinitely postpone the exercise of their rights. Practical advice: First, send formal collection notices via WeChat, text messages, or written letters and keep the records, clearly stating the repayment deadline; if the other party refuses or goes missing, promptly file a lawsuit and consider applying for property preservation to avoid waiting until the other party has no assets to seize.

Q5: When asking the other party to issue a receipt, what are the most crucial pieces of information?

First, the identities of both parties: Clearly state the names and ID card numbers of the lender and the borrower, and it's better to attach their addresses and phone numbers to avoid confusion when identifying the main parties due to the same name. Second, the amount: Write it in both large and small characters to prevent tampering. Third, the nature and purpose: Specify "I hereby borrow" and "I borrow for the purpose of ××", distinguishing it from loans and gifts. Fourth, the repayment period and interest: Specify the repayment date, interest rate, and responsibilities for overdue payments one by one. Fifth, the payment method: Indicate the method of payment and correspond it with the transfer receipt. Sixth, signatures and dates: Have the borrower sign and stamp with their fingerprints by hand, and ensure the date of signature is complete. It's safest for the borrower to write the entire document or sign each page, and the original should be kept by the lender, never allowing the other party to "take it back to modify".

If you are currently facing similar problems, it is recommended that you consult a professional lawyer as soon as possible with the relevant evidence, to avoid missing the statutory time limit.\nLegal services for creditor-debtor disputes·Beijing Henglue Law Firm