The other members in this forum are quite right.  Basically, you have to go through all your invoices/receipts for the last two years because this will determine how much tax you have to pay.  You might also want to seek help from a licensed accountant to do all the accounting for you and set things straight.

What every business owner must know is that taxes must be paid annually and earnings must be honestly declared.  This is the reason why you issue invoices and receipts to make tracking easier once tax season is near.  

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