What are the three tests for mental capacity to make a will?

The three tests for mental capacity to make a will in the UK are based on the ‘Banks v Goodfellow’ legal criteria. First, the testator must understand the nature and effect of making a will. Second, they must comprehend the extent of their property and assets. Third, they must appreciate the claims to which they ought to give effect, such as those of family members. The testator must not suffer from any mental disorder that influences their decisions. Meeting these tests ensures that the will is valid and represents genuine intentions.