Deferred Income Tax

What Does Deferred Income Tax Mean?
A liability recorded on the balance sheet that results from income already earned and recognized for accounting, but not tax, purposes. Also, differences between tax laws and accounting methods can result in a temporary difference in the amount of income tax payable by a company. This difference is recorded as deferred income tax.

Investopedia explains Deferred Income Tax
In other words, this would mean that income has been realized, but the tax on that income has not.

For example, let's say that the amount of tax that a business should pay is $100,000, but due to tax laws, the amount actually payable for this fiscal year is $85,000. The additional $15,000 would be a deferred income tax liability that the company would need to pay later on.