- It gives NRA an idea of whether or not your business is active or growing - it helps the NRA to know the level of business activities for a tax period - It helps the taxpayer to be able to pay the correct amount of tax or make tax claims/refunds - It helps NRA to correlate all your tax activities for the year ending and see if for example what you have imported equals what you have sold including closing stock and value addition - it helps NRA calculate tax liabilities/claims with accuracy - it helps GST registered businesses claim tax refunds or utilise their credits