Earn more now

I am assuming that you don't want to get a 2nd job. If your time is a definite factor:

See Passive Income link in Investing section.

jones.jones said:

So I am on the lookout for some proven business which will guarantee returns.

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There is no such thing. Nobody can guarantee that your business will succeed.

canadianbanks said:

There is no such thing. Nobody can guarantee that your business will succeed.

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Agreed.

If business results were guaranteed it would be called 'sure-thing-taking' instead of 'risk-taking'.

You would be wanting to sell things to people looking for guaranteed returns.
May I suggest Financial Advisor?

jhnsmith978 said:

Have a try for online job. Its the best part time job one can do i guess...

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Could you elaborate on what you meant by "online job" ?

I suspect that this is a troll, but in the event that it's not ...

There are plenty of proven ways for you to reliably supplement your income, and they basically all involve either "taking a second job", or "quit your job and get a higher-paying one".

cf.

job site #1
job site #2
job site #3 (if you're an EE and reasonably well-educated)

Yeah, an online job or an internet-based freelance job is a great idea. But it depends on the things you can do or the industry you're in. Like if you are into graphic arts, you can get clients online.