Build Recurring Income

A and B are partners. at the beginning of the current year, A's capital account is $30000, and B's is $50000. A and B decided to allocate income with 10% interest on capital balances at the beginning of the period and divide the balance equally. Net income for the current year is $80000. Each partner withdrew $150000 for personal use during the year. What is the amount of income that will be allocated to each partner?

Hi,

(1) Can somebody please tell me what amount of income requires you to file a federal & state & social security taxes for each of the year since 1990 ? ( I mean filing Requirement for an unmarried single Person ) I need to know for each of those years.I am single unmarried individual.

(2) If my income is below the filing requirement amount, am I still suppose to file for a state tax return ? If yes where can I get the tax rate table & forms for all those years ?

(3) If income is below the filing requirement amount, am I suppose to file for social security tax ? If yes, where can I get the tax rate tables & forms for all those years ?

(4) Where can I find the tax rate schedules for each of those years for all 3 Federal, state & Social security taxes ?

(5) If the filing requirement amount was say $10,000.00, is that amount after the standard deduction of $3600.00 for an individual or how does it work ?

I would really appreciate all the help.

Thank You.