A Malaysia company’s tax obligations do not start and end with a single annual filing. The tax authority requires most companies to estimate their tax liability in advance, pay that estimate in monthly installments, and then reconcile it against the actual result once the accounting year closes. Knowing when each step in this calendar falls, from the CP204 estimate through to the Form C annual return, matters for cash flow planning and for avoiding penalties.
Company Tax Starts With an Estimate, Then Reconciles Against the Full-Year Result
CP204 is the tax estimate; Form C is the annual corporate income tax return. Most companies first submit an estimate and pay it in installments, then confirm the balance against the actual tax computation after the accounting year closes.
This means the rule that “Form C is due seven months after the year end” should not be read as meaning nothing needs to be done before then. The estimate, the installments, any revisions, and the annual filing each carry their own deadlines.
Existing Companies and New Companies Start From Different Points
| Item | Typical existing operating company | Typical new company |
|---|---|---|
| CP204 submission | At least 30 days before the basis period begins | Generally within 3 months of starting operations, where the first basis period is not less than 6 months |
| Installments begin | 2nd month of the basis period | 6th month of the basis period in which operations start |
| Each installment payment | Generally by the 15th of each month | Generally by the 15th of each month, per the applicable installment schedule |
A company’s incorporation date and the date it starts operations can differ. Whether the company has started operating, the length of the first basis period, and eligibility for the designated new-company exemption all need to be confirmed separately; the incorporation certificate date alone should not be used to set the schedule.
Exemptions for small and medium enterprises or new companies also carry their own eligibility conditions. “Newly incorporated” should not be read as meaning no estimate or payment is due for the first two years by default.
The 85% Rule Looks at Last Year’s Estimate, Not Directly at Profit
In general, this year’s initial tax estimate cannot be lower than 85% of the prior year of assessment’s revised estimate; where there was no revision, the prior year’s original estimate is the base.
This is not “last year’s profit multiplied by 85%,” and it does not substitute last year’s final actual tax payable for the required base. If a company’s business drops significantly, it should confirm the available revision or application procedure rather than stopping payments on its own.
Estimates Can Be Revised in Specified Months When Income Changes
Generally, estimates can be revised through CP204A in the 6th, 9th, or 11th month of the basis period. When a company receives a large order, rental income changes, an asset is sold, or there is major expenditure, passing that information to a tax agent early helps determine whether an adjustment is needed.
Underestimating tax or missing an installment deadline can carry penalty consequences; keeping accounts up to date makes it easier to budget reasonably in the revision months. Changing the accounting period also brings separate notification requirements, so an old payment schedule cannot simply be carried over.
After the Year Closes, Form C and MITRS Follow
Form C and any balance of tax are generally due within 7 months of the end of the accounting period. Installments already paid are offset against the actual tax payable, with any refund or additional payment handled under the applicable procedure.
Starting from the 2025 year of assessment, companies must also submit specified financial and tax documents under the MITRS requirement, generally within 30 days of the relevant filing deadline. Any e-filing grace period or special extension for a given year should be checked against the applicable announcement separately.
Situations That Are Often Misunderstood
“No profit this year, so the scheduled installments can simply stop.”
This should be confirmed or revised through the proper procedure first, not suspended unilaterally.
“Filing CP204 is the same as completing the annual tax return.”
CP204 is an estimate; Form C is the annual return. The two cannot substitute for each other.
What to Check Next
Ask a tax agent to lay out the CP204 submission, each installment payment, the three revision months, and the Form C and MITRS dates against the company’s actual basis period. Directors should review accounts and payment status monthly and build the estimated tax into the cash budget.
Frequently Asked Questions
Is CP204 a company’s final tax bill?
No. It is an estimate; the final amount still has to be calculated based on the year’s actual income and the applicable tax law.
Is the 85% rule always based on last year’s actual tax paid?
No. It is generally based on the prior year’s revised estimate, or the original estimate where there was no revision.
Does a company that has not started operations still have to file CP204?
Companies that have not started operations have different arrangements, and the facts and applicable conditions need to be confirmed; other filing obligations may still apply.
Disclaimer
This article is based on information available as of October 8, 2026, and is provided for general information only. It does not constitute legal, tax, or employment advice. The general deadlines listed here should be checked against individual exemptions, approved extensions, and the filing arrangements for the relevant year.
Sources
LHDN — Company Tax Estimate (CP204); LHDN — Company Tax Payment; LHDN — Public Ruling 8/2025: Tax Treatment for Micro, Small and Medium Companies; LHDN — Section 82B MITRS Filing Programme, YA 2026; LHDN — Dormant Companies and Other Situations
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