The 2% MCIT versus regular corporate tax.
Corporate tax due
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MCIT (2% of gross)
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Regular tax (25%)
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A floor on what a company pays
The minimum corporate income tax exists to stop a profitable-looking business from paying almost nothing. A company computes its tax the usual way, on net taxable income, and separately computes a small tax on gross income. Whichever is higher is what it owes. The minimum corporate income tax, or MCIT, is the floor. It only becomes the number that matters when regular tax dips below it, which happens when margins are thin or the company reports a loss after deductions.
This matters because deductions can shrink net income close to zero in a hard year, which would otherwise mean almost no tax. The floor says: even then, a small slice of your gross income is due. The Bureau of Internal Revenue (BIR) administers both computations, and the comparison is the whole point of this tool.
The two rates this calculator compares
As modelled here, regular corporate income tax is 25 percent of net taxable income and the MCIT is 2 percent of gross income. The tool shows both and reports the larger as your tax due. Treat these as the calculator's working figures and confirm the current rates with the BIR, because corporate tax has moved in recent years and there are conditions attached.
One simplification to flag honestly. Smaller domestic corporations can qualify for a lower regular rate than 25 percent under the relevant conditions, but this tool applies a flat 25 percent for the regular computation. If your company might qualify for the reduced rate, the comparison here is conservative on the regular-tax side, and you should check eligibility with the BIR. The MCIT also generally applies only from the fourth taxable year after a corporation begins operating, so a young company in its first three years is usually outside it.
A thin-margin year, run through both formulas
Picture a company with PHP 10,000,000 of gross income but only PHP 600,000 of net taxable income after costs and deductions, the figures the tool loads by default. That is a 6 percent margin, which is exactly where the floor starts to bite. Using the rates this calculator applies:
| Computation | Amount |
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Whichever figure is higher is the tax due. The two taxes are equal when net income is exactly 8 percent of gross, because 25 percent of 8 is the same as 2 percent of 100. Above an 8 percent margin, regular tax leads. Below it, the MCIT floor takes over.
What "gross income" means here
The word gross does a lot of work in this computation, and it is not the same as total sales. For the MCIT, gross income generally means gross sales or receipts less the cost of sales or cost of services, before the operating expenses that the regular tax allows you to deduct. So a trader subtracts the cost of the goods sold, and a service firm subtracts the direct cost of providing the service, but neither gets to strip out rent, salaries of back-office staff, marketing, or depreciation at this stage. That is precisely why the MCIT can exceed regular tax: it taxes a figure that sits above net income, so heavy operating costs do not shield you from it. When you enter a gross income figure in this tool, enter that cost-of-sales-adjusted number rather than your full top-line revenue, or the MCIT result will be overstated. The exact items that count toward the cost of sales are defined in the rules, so confirm the precise treatment for your industry with the Bureau of Internal Revenue (BIR) before filing.
Is the extra MCIT money lost for good?
Not entirely. When the MCIT exceeds regular tax, the difference can generally be carried forward and credited against regular tax in later years, within the period the law allows, once the business is profitable enough that regular tax is the higher figure again. In the example above, the PHP 50,000 excess is the kind of amount that may be recoverable later. Track it carefully and confirm the carry-forward window with the BIR.
Why would a growing company still trip the floor?
High revenue with slim profit is the classic trigger. Trading businesses, contractors, and firms with heavy pass-through costs can post large gross income while net income stays small, which is precisely the shape that pushes the 2 percent gross figure above the 25 percent net figure. If your margin is consistently under roughly 8 percent, plan for the MCIT to be your real tax rather than the regular computation.