Sai SD Tax

I extended my deadline to be able to pay taxes on extended date of Oct 15. I wont be able to file my taxes by Oct15. How bad it would be to file later and what are the consequences? (Most likely I owe 2-3K in Taxes to IRS)

File a return what ever the invormation you may have. Pay tax amount with that. Afterwards youcan amend the tax return. If you do not file and if you owe taxes the penalty is hefty. $100 minimum with the taxor 25% what you owe which ever is higher.

I have been working for an employer until half of 2015 and then quit my job to start my own company. We don't have any profits this year. Given that I will have income only for half year, what are few things I can do (ex: selling some stocks I own etc) to save money paid through taxes?
It does not matter how long you worked. If you had any income in the year 2015 you have to file tax return. Tax is based on the taxable income.

I'm a single 24 year old renter living in Silicon Valley and I'll make about $200,000 in total income this year. How do I avoid giving 40%+ away to taxes?

Check with your employer for maximum contribution into 401k plan (retirement fund) For 2015 it is too late to invest into real estate.

I extended my deadline to be able to pay taxes on extended date of Oct 15. I wont be able to file my taxes by Oct15. How bad it would be to file later and what are the consequences? (Most likely I owe 2-3K in Taxes to IRS)

File a return what ever the invormation you may have. Pay tax amount with that. Afterwards youcan amend the tax return. If you do not file and if you owe taxes the penalty is hefty. $100 minimum with the taxor 25% what you owe which ever is higher.

I have been working for an employer until half of 2015 and then quit my job to start my own company. We don't have any profits this year. Given that I will have income only for half year, what are few things I can do (ex: selling some stocks I own etc) to save money paid through taxes?
It does not matter how long you worked. If you had any income in the year 2015 you have to file tax return. Tax is based on the taxable income.

I'm a single 24 year old renter living in Silicon Valley and I'll make about $200,000 in total income this year. How do I avoid giving 40%+ away to taxes?

Check with your employer for maximum contribution into 401k plan (retirement fund) For 2015 it is too late to invest into real estate.