Tax Rates The Tax Rates and tables are updated as required each time the Tax application is installed. The Tax Rates include: (AE, Series 6 & 8) Parameter Tables CPI Ratios Company Tax Rates Superannuation Fund Tax Rates Motor Vehicle Rates per Km Fuel Tax Credit Rates Depreciation Cost Limits (DCL) Early Payment Interest Interest on overpayments rates Exchange Rates Maintenance GDP Uplift for PAYGITI