Depletion Allowance: Essential Oil & Gas Term for Investors

A tax deduction that allows a percentage of oil or gas production income to be sheltered from taxes, reflecting the decline of the reservoir (commonly 15% of gross production revenue).

The depletion allowance is a tax benefit for extractive industries that recognizes the gradual exhaustion of a natural resource. In oil and gas, small producers and royalty owners often qualify for percentage depletion, usually allowing 15% of the well’s gross revenue to be taken as a deduction each year. This deduction is claimed instead of normal cost depletion (which is based on actual investment remaining) and, notably, it can sometimes exceed the original amount invested in the property. The allowance reduces taxable income from the well, continuing annually as long as the well produces, thereby improving the after-tax profitability of a successful well.

The depletion allowance enhances the long-term after-tax cash flow from producing wells. For investors, especially those holding royalty or working interests in smaller producers, this provision means a portion of their income is tax-free, increasing the effective return from oil and gas production over time.