Can anyone advise on this?
I've paid my tax quarterly for the past year but now I'm not sure if I need to put it into ETAX.
Do I need to input it somewhere in etax or does the ATO calculate it afterwards?
From the help pages
Tax estimate ? important information
The Tax estimate section of the e-tax interview is used to display the tax assessment estimates which e-tax has made. These estimates are based on the interview screens completed at the time you access the Tax estimate section. If you have not completed all the interview screens e-tax will still display estimates based on the information you have entered.
The e-tax calculation is an estimate only and is not intended to apply where:
■ the actual estimate is dependent on data held on your file with the ATO
■ you have requested the ATO to apply discretion, or
■ very complex calculations are involved.
The situations where the e-tax estimate may not be accurate include where you:
■ are completing an item that was subject to legislative change that, at the time of developing e-tax, had not become law (e-tax will advise you when this is the case and where you can find out more information)
■ lodged an instalment activity statement under the pay as you go (PAYG) system
■ are entitled to use your spouse?s unused seniors and pensioners tax offset
■ are a foreign resident and have claimed the seniors and pensioners tax offset
■ received a lump sum payment in arrears, including from a superannuation income stream
■ received income that was subject to averaging (income of primary producers and special professionals)
■ were a foreign resident and withholding tax was not deducted on your interest or dividends
■ received an employment termination payment, including a foreign employment termination payment
■ received income from a superannuation income stream and you turned 60 years old during the 2013-14 financial year
■ received an Australian superannuation lump sum payment
■ changed your residency status during the year
■ are claiming a housekeeper tax offset because of special circumstances
■ have requested the ATO to calculate the deductible amount of your undeducted purchase price of a foreign pension or annuity
■ received exempt foreign employment income
■ received credit for tax paid by trustee
■ already have a credit or debit balance with the ATO
■ have a debt with the Department of Human Services or other Australian government department
■ have an income tax refund due and a Family Assistance debt
■ have an income tax refund due and have consented to use all or part of your refund to repay your spouse's Family Assistance debt
■ are lodging the return late
■ have a Higher Education Loan Program (HELP) debt and have not provided details of this debt, or you are eligible for the HECS-HELP benefit
■ have a Financial Supplement debt and have not provided details of this debt
■ are entitled to a Government super contribution
■ are a minor (child under 18 years old) entitled to the low-income tax offset (LITO) and have eligible taxable income and excepted income
■ are a foreign resident and received an Australian Government pension or allowance
■ have amounts where rounding rules apply.
So I had to re-register with a new email account. There is no way to recover a locked account 
