In a tax regime with the following characteristics:
- 25-year depreciation using the straight-line method.
- Positive taxable income may be reduced by up to 50 % using historic losses.
- Interest costs capped at 20 % of EBITDA annually.
- Decommissioning costs deductible only when incurred after operations cease.
Tax payments begin at the start of operations, i.e. before the project generates positive cumulative cash flow, as illustrated in the chart above.
This results in close alignment between taxable income and accounting profit, except for interest restrictions, which accelerate taxable income relative to accounting profit. Over time, this acceleration normally reverses.
From a value perspective corporate taxes are paid as soon as the company starts operation, which is typically many years before generating positive cumulative cashflows.