Corporation tax applies to company profits within the charging rules of Guyana’s Corporation Tax Act. A resident company is generally chargeable on profits wherever arising, while a non-resident company carrying on business in Guyana is chargeable within the statutory Guyana-source boundary.
This guide covers the principal company rates, the annual G0003 return, supporting documents and advance-instalment dates. It does not present a complete exemption, incentive, penalty or payment-channel catalogue.
Current corporation-tax rates
The current controlled rates are:
- telephone company: 45 percent of chargeable profits;
- commercial company other than a telephone company: 40 percent; and
- any other company: 25 percent.
A company carrying on both commercial and non-commercial activities is taxed at 40 percent on the commercial activity and 25 percent on the non-commercial activity.
A commercial company is generally one that derives at least 75 percent of its gross income from trading in goods not manufactured by it, subject to the Act’s inclusions and exact wording. Classification should be determined from the company’s actual activities and the controlling law.
An older GRA FAQ still refers to 27.5 percent for other companies. That wording conflicts with the current Corporation Tax Act consolidation and GRA’s current rates page and should not be used.
Annual filing obligation
Companies registered or carrying on business in Guyana must file the applicable annual corporation-tax return within the statutory boundary. The current prescribed operational form is G0003 Corporation Tax Return v2.1.
The return relates to chargeable profits from the preceding year of income.
Filing deadline
The annual corporation-tax return is due on April 30. If April 30 falls on a weekend or public holiday, the next business day applies.
The balance of corporation tax, if any, is also due no later than April 30 of the following year.
Historical one-off filing extensions should not be treated as a permanent extension procedure.
Advance corporation-tax instalments
Advance instalments fall due during the year of income on:
- March 15;
- June 15;
- September 15; and
- December 15.
The calculation may be based on chargeable profits, turnover or another basis agreed with the Commissioner-General, as applicable. Instalments paid during the year are reconciled through the annual return.
Supporting documents
The current controlled guidance requires:
- completed G0003 v2.1;
- audited financial statements;
- applicable corporation-tax schedules; and
- the required declaration completed and signed by an authorised person.
The current operational schedule package is the GRA Corporation Tax Schedules v3 workbook. Use the schedules that apply to the company; the workbook itself does not create a tax liability.
If the submitted financial statements are unaudited, the return is treated as incomplete pending audited statements under the current prescribed-form guidance.
Electronic submission
A company with a GRA eServices account can create the corporation-tax return, complete it, upload the required documents and submit it electronically. GRA states that a duplicate manual paper return is not required after successful electronic submission.
Keep the submission confirmation and copies of every uploaded document.
Manual alternatives
Current operational guidance also describes submission at a GRA office or tax site and submission by post to the stated GRA post-office box. Revalidate the current office, postal and document-delivery arrangements before use.
The controlled source set supports online filing but does not establish every corporation-tax payment channel.
Practical annual checklist
1. Confirm the company classification and applicable rate. 2. Close and reconcile the accounting records for the year of income. 3. Prepare audited financial statements. 4. Complete G0003 v2.1. 5. Complete the applicable Schedules v3. 6. Reconcile advance instalments and the remaining balance. 7. Upload or attach all required documents. 8. File and pay the balance by the applicable April 30 date. 9. Retain submission and payment evidence. 10. Schedule the four advance-instalment dates for the next year.
Common mistakes to avoid
- Using the stale 27.5-percent FAQ rate.
- Classifying a company from its name rather than its income-producing activities.
- Filing without audited financial statements or applicable schedules.
- Assuming electronic filing establishes every payment channel.
- Treating a historical filing extension as a standing entitlement.
- Applying a sector incentive without checking its specific legal conditions.
Important limitations
This guide does not provide a complete catalogue of statutory exemptions or sector incentives. It also does not state a comprehensive current penalty-and-interest schedule, a complete record-retention period or a standing extension procedure. Those matters require transaction-specific verification.
Official sources
- GRA — File Corporation Tax Return
- GRA — Corporation Tax Rates and Calculations
- GRA — Forms
- Corporation Tax Act, Cap. 81:03, current controlled consolidation revised 1 April 2026
Editorial note
This guide provides general information, not tax or legal advice. Company classification, deductions, exemptions and incentives depend on the law and the company’s facts. Confirm current forms and payment arrangements with GRA and obtain qualified advice.
