Quick answer

Any person may report suspected graft by filing a complaint with the Office of the Ombudsman. The strongest filing is a verified complaint-affidavit that identifies the public official and explains—through specific dates, acts, documents, witnesses, and financial records—how the official allegedly violated Republic Act No. 3019 or another anti-corruption law.

The Ombudsman’s current filing checklist requires:

A verified complaint-affidavit, with copies equal to the number of named respondents plus four additional copies
At least two originally signed complaint-affidavits
Supporting documents and evidence, with the same number of copies
At least two original copies of a verified Certificate of Non-Forum Shopping

The Ombudsman also accepts other forms of written complaints, but an incomplete, anonymous, conclusory, or unsupported submission is more likely to require further verification or be dismissed. Filing a complaint does not itself mean that the official is guilty, suspended, or already facing a court case.

Where to file

The usual receiving agency is the Office of the Ombudsman, which may investigate on its own initiative or upon a complaint by any person. Its authority generally covers illegal, unjust, improper, or inefficient acts or omissions connected with public office.

Choose the office serving the respondent’s geographical or sectoral assignment:

Central Office: Sen. Miriam P. Defensor-Santiago Avenue, formerly Agham Road, Barangay Bagong Pag-asa, Diliman, Quezon City 1105
Deputy Ombudsman for Luzon
Deputy Ombudsman for the Visayas
Deputy Ombudsman for Mindanao
Deputy Ombudsman for the Military and Other Law Enforcement Offices, when applicable

Before traveling or sending documents, check the Ombudsman’s official complaint page and contact details for current intake arrangements, office hours, and the correct receiving office. The Ombudsman’s online portal should not be assumed to accept complaint filings merely because it offers other electronic services.

A complaint may also begin with another authorized investigating body, such as the National Bureau of Investigation, the Philippine National Police, the Commission on Audit, or the concerned agency’s internal investigation unit. However, the Ombudsman has primary jurisdiction over cases cognizable by the Sandiganbayan and may take over their investigation. A complainant ordinarily does not need to determine which trial court will eventually hear the case.

What conduct may amount to graft

“Graft” is not a label for every mistake, unpopular decision, delay, or procurement defect. The facts must fit a specific offense.

Section 3 of the Anti-Graft and Corrupt Practices Act prohibits several kinds of conduct, including:

Requesting or receiving a gift, percentage, share, or benefit connected with a government contract or transaction in which the official must intervene
Receiving a benefit in exchange for helping someone obtain a government permit or license
Accepting prohibited employment involving a private enterprise with pending official business
Causing undue injury or giving an unwarranted benefit, advantage, or preference through manifest partiality, evident bad faith, or gross inexcusable negligence
Deliberately refusing or delaying official action to obtain a benefit, favor an interest, or discriminate against another party
Entering, for the government, into a contract that is manifestly and grossly disadvantageous to it
Holding a prohibited financial or pecuniary interest in a transaction connected with the official’s intervention
Knowingly granting a license, permit, privilege, or benefit to an unqualified person
Improperly disclosing valuable confidential government information

Private individuals may also be investigated when they allegedly conspired with a public officer, gave a prohibited benefit, induced the offense, acted as a dummy, or otherwise participated in conduct covered by the law.

The commonly invoked Section 3(e)

For a criminal charge under Section 3(e), the evidence must support these essential points:

The respondent was a public officer performing official, administrative, or judicial functions, or was a private person allegedly acting in conspiracy with one.
The respondent acted through manifest partiality, evident bad faith, or gross inexcusable negligence.
The conduct either caused undue injury to a party, including the government, or gave a private party an unwarranted benefit, advantage, or preference.

A procurement violation, missing signature, procedural lapse, or unfavorable result does not automatically prove graft. The Supreme Court has emphasized that the evidence must connect the official to the wrongful act and establish the required state of mind and resulting injury or unwarranted benefit. See the Court’s discussions in Macairan v. People and Dalog v. People.

Criminal, administrative, and assistance complaints are different

One set of facts may justify more than one kind of action, but the standards and possible outcomes differ.

Criminal complaint

A criminal complaint asks the Ombudsman to determine whether probable cause exists for prosecution under RA 3019, the Revised Penal Code provisions on bribery or malversation, RA 6713, or another penal law.

If probable cause is found and the resolution receives the required approval, the Ombudsman files an information in the proper court. Depending on the respondent’s position and the governing jurisdictional rules, the case may go to the Sandiganbayan or a regular trial court. The complainant does not personally prosecute the criminal case.

A conviction under Sections 3, 4, 5, or 6 of RA 3019 may carry imprisonment of six years and one month to fifteen years, perpetual disqualification from public office, and confiscation or forfeiture of prohibited interests or qualifying unexplained wealth. Actual liability and sentence depend on the offense charged, the evidence, and the final judgment. The current imprisonment range comes from Batas Pambansa Blg. 195.

Administrative complaint

An administrative complaint seeks discipline for official misconduct. Possible charges may include grave misconduct, serious dishonesty, conduct prejudicial to the best interest of the service, oppression, neglect of duty, or violations of ethical rules, depending on the facts and applicable civil-service rules.

The Ombudsman generally has disciplinary authority over elective and appointive government officials and employees, but there are important exceptions. Its disciplinary authority does not extend in the same way to Members of Congress, members of the Judiciary, or officials removable only by impeachment. For an impeachable official, the Ombudsman may investigate serious misconduct for the purpose of filing a verified impeachment complaint if warranted.

For purely administrative matters, Section 20 of the Ombudsman Act of 1989 permits the Ombudsman to decline an investigation in specified circumstances, including when a complaint was filed more than one year after the act or omission. This is distinct from criminal prescription and is a strong reason to file promptly.

Grievance or request for assistance

If the immediate problem is unreasonable delay, refusal to perform a legal duty, unfair treatment, or inefficient government service—and the available facts do not yet establish a criminal or administrative offense—a request for assistance may be more appropriate. The Ombudsman can refer the matter, seek an explanation, or pursue remedial action.

How to prepare the complaint-affidavit

Use a chronological, evidence-based account. Avoid exaggeration and legal conclusions unsupported by facts.

1. Identify everyone accurately

For each respondent, provide as much of the following as you can verify:

Full name
Official position and agency or local government unit
Office address
Position held when the conduct occurred
Role in the transaction or decision
Names and roles of participating private individuals

If a person’s identity is not yet known, describe the position, office, signature, account, or conduct that may enable investigators to identify that person. Do not guess.

2. State your personal circumstances and source of knowledge

Give your name, address, contact information, and relationship to the incident. Separate:

What you personally saw, heard, received, prepared, or did
What a named witness personally knows
What an official document shows
What you learned from another person and therefore cannot personally confirm

A witness should ordinarily execute a separate sworn affidavit describing facts within that witness’s personal knowledge.

3. Tell the story in date order

For each material event, state:

The date and place
Who participated
What was requested, approved, paid, delivered, concealed, altered, or omitted
The government transaction or official duty involved
The amount or property involved, if documented
The government or private party allegedly injured or favored
The supporting exhibit or witness

When the exact date or amount is unknown, say so and explain the basis for any estimate. Do not present an estimate as an established fact.

4. Connect the facts to the suspected offense

Explain the factual connection instead of merely saying “this is graft.” For example:

What official intervention was required?
What gift, payment, commission, employment, interest, or favor was requested or received?
What rule, duty, qualification, or procurement requirement applied?
What conduct indicates favoritism, fraudulent intent, or conscious indifference?
Who received the alleged unwarranted advantage?
What measurable loss or injury resulted, and how was it calculated?
Why was a government contract allegedly manifestly and grossly disadvantageous?

If several officials signed the same document, describe each person’s participation. A signature, job title, or membership in a committee should not automatically be treated as proof that the person knowingly joined an unlawful scheme.

5. Mark and explain the exhibits

Label attachments consistently—such as Annex “A,” Annex “B,” and so on—and refer to them in the affidavit. Useful records may include:

Contracts, purchase orders, bids, abstracts, notices of award, inspection reports, and disbursement vouchers
Resolutions, minutes, memoranda, permits, endorsements, and approval sheets
Commission on Audit notices, audit observations, notices of suspension or disallowance, and supporting audit records
Official receipts, invoices, delivery records, payrolls, bank-supported payment records, and property documents
Emails, letters, lawful messages, and official system records
Photographs, videos, and recordings obtained lawfully
Certified copies of agency records
Sworn affidavits from witnesses with personal knowledge
Records showing relationships, ownership, beneficial interests, or conflicts of interest
Proof of the actual market price, government loss, or benefit allegedly obtained

An audit finding or disallowance can be important, but it does not by itself establish every element of a criminal graft offense.

6. Add the verification and oath

The complaint-affidavit should affirm that its factual allegations are true and correct based on personal knowledge or authentic records. Sign it before a person authorized to administer oaths. Do not sign the jurat in advance unless instructed by the administering officer.

7. Execute the Certificate of Non-Forum Shopping

The certificate generally declares whether you have commenced or know of another action involving the same issues, undertakes to disclose any related case, and promises to report a later-filed related action. Disclose related complaints honestly—including filings before another agency—so the Ombudsman can determine their legal effect.

Follow the current Ombudsman complaint checklist for the required originals and copies.

A practical filing sequence

Preserve the originals. Keep original paper and electronic records secure. Submit authenticated or clearly identified copies unless the Ombudsman requests originals.
Create an evidence index. List each exhibit, its date, source, custodian, and the fact it supports.
Write a precise affidavit. Use numbered paragraphs and distinguish firsthand knowledge from information obtained elsewhere.
Obtain witness affidavits. Each witness should describe only what that person actually knows.
Complete the verification and Certificate of Non-Forum Shopping.
Prepare the correct number of sets. The current published requirement is one set per named respondent plus four additional sets, including at least two originally signed complaint-affidavits. Supporting evidence requires the same number of copies.
Submit to the proper Ombudsman office. Ask the receiving unit to check the sets against Ombudsman Form No. 6.
Obtain proof of filing. Keep the stamped receiving copy, reference or docket number, date, office, and name or identification of the receiving unit.
Monitor official notices. Report changes in your mailing address, email address, or telephone number promptly.
Meet every deadline stated in an order. Do not assume that a request for an extension has been granted unless the Ombudsman issues an approval.

What happens after filing

Under the Rules of Procedure of the Office of the Ombudsman, the complaint is first evaluated. It may be:

Dismissed outright for lack of palpable merit
Sent to the respondent for comment
Referred to the proper government office
Sent for fact-finding
Treated as an administrative matter
Subjected to preliminary investigation

In a criminal preliminary investigation, the respondent is generally directed to submit counter-affidavits and controverting evidence within 10 days from receipt of the Ombudsman’s order. The complainant may generally file reply affidavits within 10 days after service of the counter-affidavits. A clarificatory hearing may be held when material facts require clarification, but it is not an ordinary trial.

The Ombudsman then determines whether probable cause exists. Probable cause is not a final finding of guilt. If an information is filed, guilt must still be proved in court beyond reasonable doubt.

For a criminal Ombudsman resolution, only one motion for reconsideration or reinvestigation is generally allowed, and it must be filed within 15 days from notice. Different rules and remedies may apply to administrative decisions. Because appeal and reconsideration periods are short and case-specific, obtain legal advice immediately upon receiving an adverse resolution or decision.

Filing deadlines and prescription

Do not delay while trying to assemble a perfect case. File promptly with the evidence already lawfully available and identify records or custodians that investigators may subpoena.

For violations of RA 3019 committed on or after 21 July 2016, Republic Act No. 10910 provides a 20-year prescriptive period. The longer period cannot simply be applied retroactively to earlier conduct. Depending on when the alleged offense occurred, an older 10-year or 15-year period may govern.

When prescription begins, whether delayed discovery affects the computation, and what event interrupted the period can depend on the offense, the records, and whether the transaction was publicly available or concealed. These issues are legally technical; do not assume that the period always runs from the day you personally discovered the conduct.

The one-year consideration in Section 20 of RA 6770 concerns the Ombudsman’s discretion over certain administrative complaints. It is not the general prescriptive period for criminal violations of RA 3019.

Evidence to preserve immediately

Preserve evidence in its original form whenever possible:

Download electronic files without changing their contents.
Keep complete email headers, message threads, attachments, and export data.
Retain the original device when authenticity may be disputed.
Record when, where, and from whom each document was obtained.
Keep envelopes, routing slips, metadata, and transmittal records.
Make read-only backups and maintain a log of who handled each item.
Preserve documents showing both the questioned transaction and the normal procedure used for comparison.
Save proof of requests for public records and the agency’s response or refusal.
Write a dated factual memorandum while events are fresh, without altering or “improving” earlier records.

Do not hack accounts, impersonate another person, steal records, trespass, fabricate documents, coach witnesses, or secretly record private communications without first checking whether the recording is lawful. Illegally obtained evidence can create separate criminal, civil, employment, and admissibility problems.

Confidentiality, anonymity, and personal safety

The Ombudsman’s rules permit complaints in different forms. However, an anonymous complaint is acted upon only when it merits consideration or supplies enough particulars or leads for further action. Anonymous allegations without verifiable details may be difficult to investigate.

A named complainant should assume that the respondent may eventually receive the complaint-affidavit and supporting material as part of due process. Do not include unrelated personal data, passwords, unredacted identification numbers, or sensitive information that is unnecessary to establish the complaint.

If you are a government employee or insider, preserve evidence without violating lawful custody rules or destroying agency records. Before disclosing classified, privileged, banking, tax, medical, or procurement-sensitive material, obtain advice on the proper lawful channel.

If there are credible threats, coercion, surveillance, document destruction, or pressure to recant, preserve the evidence of those acts and contact law enforcement and a lawyer immediately. The Ombudsman Act allows a witness to request security when warranted, but protection is not automatic. Do not publicly reveal a witness’s location or sensitive evidence while protection is being arranged.

Common mistakes that weaken complaints

Accusing an entire office without identifying each respondent’s act
Relying on rumor, screenshots without context, or anonymous social-media posts
Treating every procedural error as proof of corruption
Omitting the official’s duty, intervention, or connection to the transaction
Claiming government loss without records or a defensible calculation
Failing to identify who received the alleged unwarranted benefit
Submitting documents without explaining what each document proves
Using altered, cropped, incomplete, or unlawfully obtained evidence
Concealing a related complaint filed with another agency
Naming people merely because they signed a document or held supervisory positions
Publishing unproven accusations in a way that may expose witnesses, compromise the investigation, or create defamation issues
Missing a deadline because the complainant waited for an informal response from the agency
Assuming resignation, retirement, transfer, or the end of an official’s term necessarily prevents investigation

When legal help is urgent

Consult a Philippine lawyer promptly when:

The suspected conduct occurred many years ago and prescription may be disputed
The respondent is a high-ranking, impeachable, judicial, military, or law-enforcement official
You may have participated in, facilitated, or benefited from the transaction
Evidence includes private communications, bank information, classified records, or documents obtained without clear authority
A large procurement, public fund, concession, permit, or government asset is involved
You received a subpoena, show-cause order, counter-affidavit, dismissal, or adverse decision
A deadline for reconsideration or court review is running
Records are being destroyed or transferred
You or a witness has been threatened, retaliated against, or pressured to change testimony

A lawyer can help identify the proper offense, protect privileged communications, organize admissible evidence, and avoid statements that unintentionally expose the complainant or witnesses to liability.

Frequently asked questions

Can an ordinary citizen file a complaint?

Yes. The Ombudsman states that any person may use its complaint-filing service. You do not need to be a government employee or the person who suffered the financial loss.

Do I need a lawyer?

Not necessarily to submit a complaint. Legal assistance is advisable when the facts are complex, the evidence is sensitive, the incident is old, or the complainant may also face exposure.

Can I file without complete documentary evidence?

A complaint may be submitted based on available information, but it should contain concrete, verifiable facts and identify records or witnesses that investigators can obtain. Suspicion alone is not enough.

Can I file anonymously?

An anonymous complaint may be considered if it contains sufficient particulars or investigative leads. A verified, named complaint supported by evidence is generally easier to evaluate, but personal-safety concerns should be addressed before filing.

Is a Commission on Audit disallowance automatically graft?

No. It may be relevant evidence, but criminal graft still requires proof of every element of the particular offense, including the respondent’s participation and the required wrongful conduct.

Will the official be suspended as soon as I file?

No. Filing alone does not cause automatic suspension. Preventive suspension during an Ombudsman investigation requires the legal conditions to be met and an order from the proper authority. Suspension under Section 13 of RA 3019 concerns a public officer facing a pending criminal prosecution under a valid information for covered offenses.

Can the Ombudsman investigate former officials?

Yes, conduct committed during a person’s tenure does not necessarily escape investigation merely because the person later resigned, retired, transferred, or left office. Prescription and the available remedies must still be assessed.

How long will the case take?

There is no reliable universal duration. Time depends on the number of respondents, complexity of the transactions, availability of records and witnesses, referrals, preliminary investigation, motions, and court proceedings. The “20 minutes” shown on the Ombudsman’s service page refers to the stated transaction time for receiving a filing, not the time required to investigate or decide the case.

What should I keep after filing?

Keep the full filed set, proof of receipt, docket or reference number, original evidence, evidence index, delivery records, and every notice or order. Record the date each official communication was received because deadlines usually run from receipt.

Official legal sources

This article provides general legal information, not legal advice or a prediction of any case outcome. The proper charge, forum, deadline, and remedy depend on the respondent’s position, the dates involved, the governing law at the time, and the admissible evidence. Official sources and procedures were checked as of 5 September 2026.