**This is a one week loan. BTC
If you are charging 10% for a one week loan in the US or Canada it is considered Usury and is a federal offence. The legal limit for interest rate in Canada is 60% per annum. In the US it is regulated by state statutes and the allowable interests rates range from 8-36%. The federal regulation in the US sets the amount at twice the interest rate set by the state and makes it a felony offence. I'm not sure about the laws in other countries but there is no court in North America that will allow you to sue the borrower to recover the debt since the interest rate was illegal. The laws were enacted to protect citizens from debt slavery. Anyway if you were considering this as a possible business venture, you should probably stop before you get yourself into some serious legal trouble.
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Payday loans are not regulated in Canada, so that's why their average interest rates are 1,242% per annum. If OP lives in Canada and calls this a payday loan, it may be legal.
It isn't considered a payday loan if it is secured and OP was demanding collateral
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