Should we give the zakat of mehr?

The zakat of mehr is not due until a woman receives the total amount of the mehr she requested from her husband. Because, full ownership (al mulk-at taam) condition of zakat is not fulfilled, until then. When the woman receives all of the mehr, following is checked:
If this mehr, after subtracting the debts and basic needs, exceeds the amount of nisab (85 grams of gold or equal amount of money, goods), its zakat is due.
The ratio of zakat is fortieth of the amount on which zakat is due.