In the Philippine legal system, the recovery of unpaid debts is governed by a combination of the Civil Code of the Philippines, the Rules of Court, and specific circulars from the Bangko Sentral ng Pilipinas (BSP). Collecting a debt is not merely a matter of asking for payment; it involves a structured legal process that transitions from personal demands to judicial intervention.

1. The Preliminary Step: The Demand Letter

Under Article 1169 of the Civil Code, "those obliged to deliver or to do something incur in delay from the time the obligee judicially or extrajudicially demands from them the fulfillment of their obligation."

Necessity of Demand: Without a formal demand, the debtor is generally not considered in legal delay (mora), and interest may not begin to accrue unless stipulated in writing.
Content: A formal demand letter should state the exact amount due, the basis of the debt (e.g., a promissory note or contract), a specific period to pay (usually 5 to 15 days), and a warning of legal action.

2. Judicial Remedies for Debt Collection

A. Small Claims Cases

For debts involving purely money claims where the amount does not exceed ₱1,000,000.00 (exclusive of interest and costs), the Revised Rules on Summary Procedure and Small Claims Cases apply.

Nature: It is an inexpensive and expeditious remedy.
No Lawyers: Legal counsel is strictly prohibited from representing parties during the hearing. Parties must appear in person.
Finality: The decision in a small claims case is final, executory, and unappealable.

B. Ordinary Action for Collection of Sum of Money

If the debt exceeds the small claims threshold, the creditor must file a formal Complaint for Collection of Sum of Money.

Jurisdiction: * First Level Courts (MTC/MeTC): Claims up to ₱2,000,000.00.
- Regional Trial Courts (RTC): Claims exceeding ₱2,000,000.00.
Process: This involves a full-blown trial where lawyers are required, evidence is presented according to the Rules of Court, and the decision can be appealed to higher courts.

3. Interest Rates: Stipulated vs. Legal

The Philippine legal framework distinguishes between interest for the use of money (monetary interest) and interest as a penalty for delay (compensatory interest).

Stipulated Interest

Parties are free to agree on any interest rate. However, under Article 1956 of the Civil Code, "no interest shall be due unless it has been expressly stipulated in writing."

Note on "Unconscionable" Rates: While the Usury Law is currently suspended, the Philippine Supreme Court frequently strikes down interest rates (e.g., 3% per month or higher) if they are deemed "iniquitous, unconscionable, or contrary to morals." In such cases, the court may reduce the rate to the prevailing legal interest.

Legal Interest

In the absence of a written agreement, or if the court voids the stipulated rate, legal interest applies. Pursuant to BSP Monetary Board Circular No. 799, the legal interest rate is:

6% per annum for loans, forbearance of money, goods, or credits, and judgments.

Calculation of Interest

The total amount due is calculated based on the following formula: $$Total = Principal \times (1 + r \times t)$$ Where:

$r$ is the interest rate (decimal).
$t$ is the time period in years.

4. Criminal Actions Related to Debt

In the Philippines, "no person shall be imprisoned for debt" according to the Constitution. However, the manner in which the debt was incurred or the use of bounced checks can lead to criminal liability.

Bouncing Checks Law (B.P. Blg. 22): The mere act of issuing a check that is dishonored for "insufficiency of funds" is a criminal offense, regardless of the intent.
Estafa (Article 315, Revised Penal Code): If the debtor used deceit, false pretenses, or fraudulent acts to obtain money from the creditor, they may be charged with Estafa. Unlike a simple debt, Estafa carries the penalty of imprisonment.

5. Prescription: The Statute of Limitations

A creditor cannot wait forever to collect. Under the Civil Code, the right to file an action prescribes after a certain period:

10 Years: For obligations based on a written contract.
6 Years: For obligations based on an oral contract.

6. Execution of Judgment

Winning a lawsuit is not the final step. Once the court issues a final and executory decision, the creditor must move for a Writ of Execution.

Method of Execution	Description
Levy on Real/Personal Property	The sheriff seizes the debtor's properties (cars, land, equipment) to be sold at public auction.
Garnishment	The court orders the debtor’s bank to freeze and release funds directly to the creditor.
Execution of Money Judgment	The debtor is ordered to pay the amount directly under the supervision of the court.

Summary Table: Choosing the Right Action

Amount of Debt	Applicable Rule	Lawyer Required?
Below ₱1,000,000	Small Claims	No
₱1,000,000 to ₱2,000,000	Summary Procedure (MTC)	Yes
Above ₱2,000,000	Ordinary Civil Action (RTC)	Yes
Involves Bounced Check	B.P. Blg. 22 (Criminal)	Yes