Zakaat

Using money and calculating zakaat from a life insurance payout

Q: I had taken out a life insurance policy with a dread disease cover many years ago. (I call that my pre-hidayat days). I have now been paid out part of the money for a dread disease, which is part of the life cover. Can I calculate all the premiums I paid over the years and take the money out of the payout as halaal money for myself? Can I use the balance of the payout for Income Tax payment. I would then cancel the policy. 

Also, what are the zakaat implications regarding this money if it is halaal. Do I need to calculate zakaat from the time I started paying the premiums or not?

Zakaat on a long term investment and retirement annuity

Q: I have 2 investments and want clarity on my responsibility when it comes to zakaat.

1. I have purchased shares in company x for long term investment (probably 5 to 15 years). Do I pay zakaat on the quarterly/yearly dividends received or do I pay zakaat on the full value of the share?

2. I am investing in a retirement annuity, which is now only accessible upon my retirement. Do I pay zakaat yearly on the amount that is in my retirement account or would I only pay zakaat when the investment matures (when I retire)?

Zakaat on a joint account

Q: My wife is a housewife and does not earn an income. I provide her with an allowance as well as contribute into a savings/investment account for her.

Questions:

1. Is she liable for zakaat on the money in her investment account (which I contribute towards) or am I?

2. If we have a joint savings account (in both our names), who is responsible for the zakaat in this account?

3. Since we are married in-community-of-property, would she be responsible to pay zakaat on any investments that are in my name?