It can be argued that a provision of a State Limitation Act precluding the bringing of an action for unpaid income tax (or additional tax) after the expiry of six years (or two years) from the date on which the cause of action arose (or accrued) is directly inconsistent with the express provision of the Assessment Act (s. 209) that any unpaid tax may be recovered in any court of competent jurisdiction by the Commissioner. We are not, however, persuaded that there is necessarily any direct inconsistency between a provision, such as s. 209, conferring a right of action and recovery and a Limitation Act provision limiting the period in which such a right of action and recovery might be pursued. On the other hand, when one examines the general scheme of the Assessment Act provisions providing for collection and recovery of tax, it appears to us to be clear that there is no room for the importation into them of such State Limitation Acts provisions. The provisions of the Assessment Act relevantly cover the field. Indeed, the intrusion of State Limitation Acts provisions would significantly undermine the scheme for collection and recovery of tax which is contained in the Assessment Act. Thus, e.g., s. 206 of the Assessment Act authorizes the Commissioner "in any case [to] grant such extension of time for payment as he considers the circumstances warrant" and provides that "in such case the tax shall be due and payable accordingly". That power to grant an extension of time "in any case" plainly extends to the case where tax has already become due and payable with the result that the right of action to recover the tax has already arisen or accrued. The intrusion of a State Limitation Act provision which, according to its terms, barred recovery after the expiry of a specified time from the date on which the cause of action "arose" or "accrued": see, e.g., the Queensland Act, s. 10(1)(d) and (5) or "first accrues": see, e.g., Limitation Act 1969 N.S.W., ss. 14(1) and 18 would be incompatible with the existence of such a broad discretionary power. If, in such a case, the Commissioner granted an extension of time until after the expiry of the relevant limitation period from the date on which the right of action for recovery of the tax "arose" or "accrued" or "first accrues", the application of a State Limitation Act provision to bar recovery in accordance with the extension of time would be inconsistent with the provisions of the Assessment Act to the effect that the tax should be then due and payable (s. 206) and that any tax unpaid may be sued for and recovered in any court of competent jurisdiction: s. 209. If the application of the State limitation provision was not excluded, the result would be that the general discretion conferred upon the Commissioner was effectively confined to preclude the grant of any extension of time beyond the limitation of action period since, if an extension of time beyond that period were granted, the tax would be irrecoverable at the time when it became due and payable in accordance with the extension.