A complaint affidavit is often the first serious document in a Philippine criminal case. If it is vague, incomplete, based on hearsay, or missing key evidence, the prosecutor may dismiss the complaint before it ever reaches court. If it is clear, sworn properly, and supported by documents or witness statements, it gives the prosecutor a practical roadmap: what happened, who did it, when and where it happened, what law was violated, and why the evidence is strong enough to proceed.

What Is a Complaint Affidavit in the Philippines?

A complaint affidavit is a sworn written statement where the complainant narrates facts showing that another person committed a crime or offense.

In practice, people use the term “complaint-affidavit” because one document often performs two functions:

It charges or complains against a person for a specific offense.
It serves as the complainant’s sworn evidence during preliminary investigation or prosecutor evaluation.

Under Rule 110 of the Revised Rules of Criminal Procedure, a criminal complaint is a sworn written statement charging a person with an offense, subscribed by the offended party, a peace officer, or another public officer charged with enforcing the violated law. The complaint or information must be in writing, in the name of the People of the Philippines, and against the persons who appear responsible for the offense. (Supreme Court E-Library)

A complaint affidavit is commonly used for cases such as:

Estafa or swindling under Article 315 of the Revised Penal Code
Theft, robbery, malicious mischief, unjust vexation, grave coercion, or threats
Cyberlibel, online scam, identity theft, or computer-related fraud under Republic Act No. 10175, the Cybercrime Prevention Act of 2012
Violence against women and children under Republic Act No. 9262
Bouncing checks under Batas Pambansa Blg. 22
Falsification, perjury, or use of falsified documents
Qualified theft or other offenses involving employers, employees, partners, or family members

It is different from a police blotter. A police blotter is usually just a police record of an incident report. A complaint affidavit is a sworn statement intended to support legal action.

Legal Basis: Why the Complaint Affidavit Matters

A prosecutor does not simply accept a story because it sounds unfair or emotional. The affidavit must show facts that satisfy the elements of an offense.

Rule 110 requires the complaint or information to state the name of the accused, the offense, the acts or omissions complained of, the offended party, the approximate date, and the place where the offense happened. The acts must be stated in ordinary and concise language so a person of common understanding can know what offense is being charged. (Supreme Court E-Library)

For prosecutor-level proceedings, the affidavit is especially important because Rule 112 requires the complaint to state the respondent’s address and to be accompanied by the affidavits of the complainant and witnesses, plus supporting documents. These must be sufficient to establish probable cause. (Supreme Court E-Library)

Since 2024, prosecutor offices under the Department of Justice-National Prosecution Service also apply updated DOJ-NPS investigation rules. DOJ Department Circular No. 015 governs regular preliminary investigations and inquest proceedings, while DOJ Department Circular No. 028 covers summary investigation and expedited preliminary investigation for lower-penalty offenses. These rules emphasize prima facie evidence with reasonable certainty of conviction, e-filing options, virtual hearings, and a more active prosecutor role in case build-up. (Department of Justice Philippines)

In simple terms: your affidavit should not merely say, “I was scammed” or “he harassed me.” It should explain the facts that prove the legal elements of the offense.

Before Drafting: Check Where the Complaint Should Be Filed

Do not draft blindly. The correct office depends on the nature of the problem.

Situation	Usual first step	Practical note
Criminal offense such as estafa, theft, threats, falsification, cybercrime, VAWC, or BP 22	Office of the City or Provincial Prosecutor, or police/cybercrime unit for investigation assistance	The prosecutor will usually require a complaint-affidavit, witness affidavits, IDs, and evidence.
Recent warrantless arrest	Inquest prosecutor	This is faster than ordinary preliminary investigation because the respondent is under custody.
Minor dispute between private individuals in the same city or municipality	Barangay conciliation may be required first	A Certificate to File Action may be needed before filing in court or a government office.
Labor claims like unpaid wages or illegal dismissal	DOLE, NLRC, or SEnA process	A criminal complaint affidavit is not the usual starting document unless a crime is also involved.
Pure collection of debt, breach of contract, ejectment, or damages	Civil court, small claims, barangay, or appropriate agency	Non-payment alone is not automatically estafa.
Condominium, subdivision, or housing disputes	DHSUD/HSAC, depending on issue	Use the agency’s required complaint form and sworn statements.

Barangay Conciliation: Do You Need It First?

Under the Katarungang Pambarangay provisions of Republic Act No. 7160, the barangay lupon generally has authority over disputes between parties actually residing in the same city or municipality, subject to exceptions. Excluded matters include offenses punishable by imprisonment exceeding one year or a fine exceeding ₱5,000, offenses with no private offended party, and disputes involving the government or public officers acting in official functions. (Supreme Court E-Library)

If barangay conciliation applies, no complaint, petition, action, or proceeding involving a matter within the lupon’s authority should be filed directly in court or another government office unless there has been confrontation before the lupon or pangkat and no settlement was reached, as certified by the barangay. (Supreme Court E-Library)

This is a common bottleneck. Prosecutor offices sometimes ask for the Certificate to File Action if the dispute appears barangay-conciliable.

Step-by-Step Guide to Preparing a Complaint Affidavit

1. Identify the Correct Respondent

Write the respondent’s full name, nickname if known, address, workplace, phone number, email, social media account, or any identifying detail.

Do not write “John Doe” unless you truly do not know the person’s identity. If the respondent’s full name is unknown, describe the person as specifically as possible.

Useful details include:

Full name and aliases
Last known address
Employer or business name
Mobile number, email, or social media handle
Vehicle plate number
Relationship to you
Role in the incident

For prosecutor filings, the respondent’s address matters because the prosecutor must be able to serve subpoenas and notices. Missing or wrong addresses often delay the case.

2. State Who You Are and Why You Have Personal Knowledge

Start with your personal details:

Name
Age
Citizenship
Civil status, if relevant
Address
Occupation, if relevant
Relationship to the respondent
Statement that you are executing the affidavit based on personal knowledge and authentic records

A strong affidavit usually says something like:

I am the complainant in this case. I personally know the facts stated here because I dealt directly with the respondent, personally sent the payments, received the messages, and kept the attached records.

Avoid relying on what other people merely told you. Philippine courts and prosecutors give more weight to affidavits based on personal knowledge, not hearsay. The Supreme Court has repeatedly treated lack of personal knowledge in affidavits as a serious weakness when determining whether evidence should be given weight. (Lawphil)

3. Write a Clear Timeline

A prosecutor should be able to understand the case in one reading. Use dates, places, names, amounts, and actions.

A practical structure is:

Background — how you know the respondent.
First important event — what happened, when, where, and who was present.
Key act showing the offense — deceit, taking, threat, violence, falsification, online posting, refusal, or other act.
Damage or injury — money lost, property taken, reputation harmed, physical injury, fear caused, or legal right violated.
Follow-up events — demands, replies, promises, admissions, or refusal to correct the wrong.
Evidence — attach and label documents, screenshots, receipts, messages, medical certificates, or witness statements.

Instead of writing:

Respondent scammed me and refuses to pay.

Write:

On 10 March 2025, respondent told me through Facebook Messenger that he had an available iPhone 15 Pro Max for ₱58,000 and promised delivery within three days. Relying on his representation, I transferred ₱58,000 to his GCash account ending in 1234 on the same day. After receiving the money, respondent stopped responding. On 15 March 2025, I discovered that he had used the same photos and sales script to solicit payments from at least two other buyers.

The second version gives facts. The first gives only a conclusion.

4. Match the Facts to the Offense

You do not need to write like a law textbook, but your affidavit should show the elements of the offense.

For example:

Possible case	Facts your affidavit should clearly show
Estafa	False representation or deceit, your reliance on it, delivery of money/property, damage, and respondent’s intent or conduct showing fraud
Theft	Property belonged to you or another, respondent took it, no consent, intent to gain
BP 22	Check issued, dishonored, notice of dishonor received, failure to pay within required period
Cyberlibel	Defamatory statement, publication online, identification of you, malice or circumstances showing reputational harm
VAWC	Relationship covered by RA 9262, acts of violence or abuse, dates, harm, threats, economic or psychological abuse if applicable
Falsification	Document involved, false statement or alteration, who made or used it, how it caused damage or legal effect
Threats or coercion	Exact words or acts, context, fear or compulsion caused, witness or recording if available

If you are unsure of the exact offense name, focus on facts. Prosecutors can evaluate the proper charge, but they cannot invent facts missing from your affidavit.

5. Attach Evidence Properly

Label every attachment clearly:

Annex “A” — copy of valid ID
Annex “B” — screenshot of conversation dated 10 March 2025
Annex “C” — GCash transaction receipt
Annex “D” — demand letter
Annex “E” — medical certificate
Annex “F” — witness affidavit of Juan Dela Cruz

For screenshots, include:

The full conversation thread, not only favorable snippets
Date and time stamps
Profile URL, username, number, or email
Device screenshots showing context
A short explanation in the affidavit identifying who owns the account

For electronic evidence, preserve originals. Do not delete chats, crop screenshots excessively, or edit metadata. If money was transferred, get official transaction records from the bank, e-wallet, remittance center, or platform.

Be careful with secret recordings. Republic Act No. 4200, the Anti-Wire Tapping Act, penalizes certain unauthorized recordings or interceptions of private communications, and illegally obtained recordings may create a separate legal problem. (Lawphil)

6. Include Witness Affidavits When Needed

If another person saw, heard, received, inspected, or handled something important, ask that person to execute a separate witness affidavit.

A witness affidavit should answer:

Who is the witness?
What did the witness personally see, hear, receive, or do?
When and where did it happen?
How does it support the complaint?
What documents or objects does the witness identify?

Do not put another person’s story inside your affidavit as if you personally witnessed it. Let that person swear to it directly.

7. Write the Prayer or Request

End the body with a short request, such as:

I am executing this Complaint-Affidavit to charge respondent with Estafa under Article 315 of the Revised Penal Code and/or such other offense as may be warranted by the evidence, and to request the filing of the appropriate criminal case in court.

Use “and/or such other offense as may be warranted by the evidence” carefully. It helps avoid being trapped by an incorrect label, but it does not replace the need to state complete facts.

8. Sign Before the Proper Officer

The affidavit must be signed and sworn.

Rule 112 provides that affidavits in preliminary investigation must be subscribed and sworn to before a prosecutor or government official authorized to administer oath, or, if unavailable, before a notary public. The officer must certify that the affiant was personally examined and voluntarily executed and understood the affidavit. (Supreme Court E-Library)

For notarization, bring a valid government-issued ID. Under the 2004 Rules on Notarial Practice, a jurat requires the person to appear before the notary, be identified through competent evidence of identity, sign in the notary’s presence, and swear or affirm the document. The Supreme Court has disciplined notaries for notarizing documents without proper personal appearance or competent proof of identity. ([Lawphil][6])

Suggested Format for a Philippine Complaint Affidavit

Use this as a working structure:

REPUBLIC OF THE PHILIPPINES )
CITY/MUNICIPALITY OF ______ ) S.S.

COMPLAINT-AFFIDAVIT

I, [FULL NAME], of legal age, [citizenship], [civil status], and residing at [address], after being sworn in accordance with law, state:

1. I am the complainant in this case. I have personal knowledge of the facts stated in this affidavit.

2. Respondent is [name], of legal age, with address at [address/last known address]. Respondent may also be contacted or identified through [phone/email/social media/workplace], if applicable.

3. [Background facts.]

4. [Chronological narration of incident, with dates, places, amounts, and witnesses.]

5. [Facts showing the elements of the offense.]

6. [Damage, injury, loss, fear, or prejudice suffered.]

7. Attached as Annexes are:
   a. Annex “A” – [description]
   b. Annex “B” – [description]
   c. Annex “C” – [description]

8. I am executing this Complaint-Affidavit to charge respondent with [offense/law] and/or such other offense as may be warranted by the evidence.

IN WITNESS WHEREOF, I have signed this Complaint-Affidavit on [date] in [place].

[Signature]
[Printed Name]

SUBSCRIBED AND SWORN to before me on [date] in [place], affiant exhibiting competent proof of identity: [ID details].

Documents Usually Required

Requirements vary by prosecutor office, city, and type of case, but the usual package includes:

Document	Why it matters
Complaint-affidavit	Main sworn narration of the complainant
Valid government ID	Proves identity for oath or notarization
NPS Investigation Data Form	Commonly required by prosecutor offices for docketing and case information
Witness affidavits	Supports facts the complainant did not personally witness
Supporting documents	Receipts, contracts, checks, bank records, screenshots, demand letters, medical certificates, photos, CCTV, police report
Barangay Certificate to File Action	Needed if the dispute is covered by barangay conciliation
Copies for respondents and official file	Prosecutor offices usually require multiple copies; bring extra
Special Power of Attorney, if filing through a representative	Useful for filing logistics, but facts should still come from people with personal knowledge

The DOJ’s own filing guidance for preliminary investigation lists the Investigation Data Form, complaint-affidavit or sworn statement, and supporting documents among the filing requirements. ([Department of Justice Philippines][7])

Practical Filing Process at the Prosecutor’s Office

A typical prosecutor-level complaint goes through these stages:

Prepare the complaint-affidavit and annexes. Organize documents by annex. Make enough copies.
Go to the proper City or Provincial Prosecutor’s Office. File where the offense was committed or where an essential ingredient occurred. Rule 110 generally places criminal actions in the court of the municipality or territory where the offense was committed or where an essential ingredient occurred. (Supreme Court E-Library)
Submit for assessment or docketing. The receiving office may check completeness, jurisdiction, respondent address, number of copies, and whether barangay conciliation is required.
Case build-up or preliminary evaluation may occur. Under the DOJ-NPS rules, prosecutors may require missing evidence or conduct case build-up before a complaint proceeds.
Respondent is served with subpoena, if the case proceeds. The respondent is usually required to submit a counter-affidavit and evidence.
Clarificatory hearing may be set. This is not a full trial. Parties may be asked questions, but there is generally no cross-examination like in court.
The prosecutor issues a resolution. The complaint may be dismissed, or an information may be filed in court.
If filed in court, the judge independently evaluates probable cause. The judge may issue a warrant, summons, or dismissal depending on the evidence and offense.

In straightforward cases, prosecutor proceedings may take a few months. In congested offices, cases with multiple respondents, incomplete addresses, voluminous records, cyber evidence, or foreign parties may take longer.

Common Mistakes That Weaken a Complaint Affidavit

1. Writing Emotions Instead of Facts

It is understandable to feel angry or betrayed. But prosecutors need facts.

Weak:

Respondent is a bad person and a professional scammer.

Stronger:

Respondent represented that he owned the vehicle, showed me a copy of the OR/CR, received ₱150,000 as down payment, and later admitted through text message that the vehicle was actually owned by another person.

2. Missing the Respondent’s Address

A complaint may stall if the prosecutor cannot serve the subpoena. If you do not know the exact address, provide the last known address, workplace, business address, email, phone number, and social media details.

3. Attaching Screenshots Without Context

A single screenshot may be attacked as incomplete. Include the full thread, dates, account identifiers, and a statement explaining how you know the account belongs to the respondent.

4. Not Proving the Legal Elements

For estafa, mere non-payment is not enough. The affidavit should show deceit at the beginning, reliance, delivery of money or property, damage, and circumstances indicating fraudulent intent.

For BP 22, attach the check, bank return slip, notice of dishonor, and proof that the notice was received.

For cyberlibel, attach the post, URL, screenshots, identity link, date of publication, and facts showing how you were identified and harmed.

5. Combining Too Many Incidents Without Organization

If there are multiple acts, use headings:

First transaction
Second transaction
Respondent’s false representation
Payments made
Respondent’s admissions
Damage suffered

A prosecutor should not have to guess which facts support which charge.

6. Signing Without Understanding the Perjury Risk

A complaint affidavit is under oath. Republic Act No. 11594 amended Article 183 of the Revised Penal Code and increased the penalty for perjury involving knowingly untruthful statements in an affidavit on a material matter before a competent officer. ([Lawphil][8])

Do not exaggerate, invent, hide important contrary facts, or attach altered evidence.

Special Considerations for Filipinos or Foreigners Abroad

If you are outside the Philippines but need to file a complaint affidavit for use in the Philippines, the affidavit must usually be properly notarized or consularized.

Common options are:

Situation	Usual approach
Filipino abroad signing before a Philippine Embassy or Consulate	Consular notarization or jurat, with personal appearance and valid ID
Document signed before a local notary in an Apostille country	Local notarization, then apostille by the foreign country’s competent authority
Document from a non-Apostille country	Authentication/legalization rules may still apply, depending on the country
Foreign-language documents	Certified English translation may be required or practically necessary

Philippine embassies commonly require personal appearance for consular notarization because the officer verifies identity and understanding of the document. A consularized affidavit can generally be used in the Philippines. ([Philippine Embassy][9])

For documents executed abroad in countries that use apostilles, the apostille process may allow the document to be sent directly to the Philippines without further Philippine embassy authentication, depending on the document and country. ([Philippine Embassy Canberra][10])

Also remember that Philippine criminal jurisdiction is usually territorial. Under Article 2 of the Revised Penal Code, Philippine penal law applies outside Philippine territory only in specific situations, such as offenses on Philippine ships or airships, counterfeiting Philippine currency or securities, certain acts by public officers, and crimes against national security and the law of nations. ([Lawphil][11])

If the act happened abroad, explain clearly what part happened in the Philippines, what damage occurred here, whether Philippine accounts or victims were involved, and why a Philippine office has jurisdiction.

Frequently Asked Questions

Is a complaint affidavit the same as filing a criminal case in court?

Not always. In many cases, the complaint affidavit is filed first with the prosecutor for investigation. If the prosecutor finds sufficient basis, the prosecutor files an information in court. An information is the formal written accusation subscribed by the prosecutor and filed with the court. (Supreme Court E-Library)

Can I prepare my own complaint affidavit?

Yes. Many complainants prepare their own affidavit, especially for straightforward matters. The key is to state facts clearly, attach evidence, and swear to the document properly. For complex cases, the drafting must be more careful because missing an element can lead to dismissal.

Does a complaint affidavit need to be notarized?

It must be sworn. For preliminary investigation, affidavits should be subscribed and sworn before a prosecutor or authorized government official, or if unavailable, before a notary public. (Supreme Court E-Library)

How many copies should I prepare?

A safe rule is to prepare one original set, one set for each respondent, and at least two extra sets for the prosecutor’s office and your receiving copy. Some offices have their own copy requirements, so bring extra copies of both the affidavit and annexes.

Can I file a complaint affidavit without a police blotter?

Yes, a police blotter is not always required. However, for incidents involving violence, threats, theft, accidents, or recent events, a police report or blotter can help show prompt reporting and preserve details.

What if I do not know the exact crime committed?

State the facts completely and honestly. You may write that you are charging the respondent for the offense you believe applies “and/or such other offense as may be warranted by the evidence.” The prosecutor evaluates the proper charge, but the affidavit must still contain the necessary facts.

Can a representative file the complaint for me?

A representative may help submit documents if properly authorized, especially if you are abroad or physically unable to file. But the key factual affidavit should be signed by the person with personal knowledge. A representative should not swear to facts they did not personally witness.

What happens if the respondent ignores the subpoena?

If the respondent is properly notified but fails to submit a counter-affidavit, the prosecutor may resolve the complaint based on the complainant’s evidence. Rule 112 allows the investigating officer to proceed based on the evidence presented when the respondent cannot be subpoenaed or does not submit counter-affidavits within the required period. (Supreme Court E-Library)

Can I withdraw the complaint later?

You may execute an affidavit of desistance, but it does not automatically end a criminal case. Criminal actions are generally prosecuted under the direction and control of the prosecutor, and the State may still proceed if the evidence supports the charge. (Supreme Court E-Library)

Will filing a criminal complaint also recover my money?

A criminal case may include civil liability arising from the offense unless waived, reserved, or separately filed. Rule 111 provides that when a criminal action is instituted, the related civil action for recovery of civil liability is generally deemed instituted with it, subject to exceptions and filing-fee rules. (Supreme Court E-Library)

Key Takeaways

A complaint affidavit should tell a clear, chronological, evidence-backed story.
The affidavit must show facts, not just accusations or conclusions.
Include the respondent’s address and identifying details to avoid service delays.
Attach properly labeled evidence and separate witness affidavits.
Check barangay conciliation requirements before filing if the dispute is between private individuals in the same city or municipality.
Swear to the affidavit before the prosecutor, an authorized officer, or a notary public.
Be accurate. False statements in a sworn affidavit may expose the affiant to perjury.
Keep complete copies of everything you file, including the stamped receiving copy.

[6]: https://lawphil.net/judjuris/juri2015/oct2015/pdf/ac_10783_2015.pdf?utm_source=chatgpt.com "~upreme <!Court" data-preserve-html-node="true" [7]: https://www.doj.gov.ph/filing_of_complaint_for_pi.html?utm_source=chatgpt.com "Filing of Complaint for Preliminary Investigation" [8]: https://lawphil.net/statutes/repacts/ra2021/ra_11594_2021.html "Republic Act No. 11594" [9]: https://philippineembassy-dc.org/consular-notarization/?utm_source=chatgpt.com "Consular Notarization - Philippine Embassy, Washington DC" [10]: https://www.philembassy.org.au/consular/authentication?utm_source=chatgpt.com "Notarials / Legalization and Other Services" [11]: https://lawphil.net/statutes/acts/act1930/act_3815_1930.html "Act No. 3815"