People now get one to two hours less sleep each night, on average, compared to 60 years ago. A primary reason for this is the proliferation of electronics, which also allows us to work (and play) later than ever before.
The Internal Revenue Service requires that individuals be able to produce records proving any income, deductions or credit claimed for at least three years from the date of a return, the statute of limitations for how long the I.R.S. has to assess additional tax if all income was reported correctly.
When you charge GST, you need to issue a tax invoice showing the amount of GST and the price of the supplies separately. The tax invoice has to be issued within 21 days after the time of the supply. Particulars to be shown in the tax invoice: The words 'tax invoice' in a prominent place. The invoice serial number. The date of issuance of the invoice. The name (or trade name), address and GST identification number of the supplier.