Loans & Debts

Using someone's credit card and paying back with extra

Q: I live with my parents, and over the past few months, I've made some online purchases using my father's credit card (with his permission). Since there have been quite a few transactions, I’d like to repay him but it would take a bit of time to track every individual purchase. 

Is it permissible if I give my father an amount that is more than the total of my purchases, ensuring I cover the minimum amount I owe him? 

For example, if the purchases total $1000, I would return something like $1200 to cover any uncertainty.

Taking an interest free loan from the government

Q: The government I live in help the citizens with a payment of the house or flat when you are moving and give you a support/loan. The loan is interest free the first 5 years so you don’t have to pay the interest and their intention is to help out the citizens because it’s in the law. You can make a plan with them that they take every month from my student allowance until the loan is paid and it will be interest free. Can I take this loan or is it haram?

Charging a penalty for late payment and calling it admin fees

Q: I am currently renting my business premises from a an Islamic trust. They have amended the current lease agreement to state that 2% interest will be added to late payment of even a months rent. When the Muslim tenants objected, they changed the word interest and now describe it as admin fees.

Is this allowed? This very trust contributes to the funding of the masjid and Islamic school.

Making an effort to repay the loan

Q: I have taken some money from a friend from Australia. While taking the money, I planned to work abroad so that I can earn big amounts and pay back the money. I want to ask that now I am not in a condition to return the money. Is that a sin for me? What should I do? The person hasn't asked me for the money, and knows that I am not in a financial condition to return the money.