Large-company corporation tax instalments (UK)

A company that is large for corporation-tax instalment purposes normally pays its estimated liability in quarterly instalments, subject to statutory thresholds and exceptions. For a 12-month accounting period, four payments normally fall in months 7 and 10 of that period and months 1 and 4 of the following period. The £1.5 million profit threshold is adjusted for associated companies and shorter periods; the definition of profits and first-large-period exception must also be checked. The very-large-company timetable is separate and excluded from current TX.