Additional personal contributions are contributions you can voluntarily make in addition to your regular DFRDB contributions.
Please note the limit on the amount of personal contributions you can pay into your superannuation without incurring additional tax.
No tax is payable on these contributions on entry to DFRDB as these contributions are paid from your after tax salary.
You can also arrange through your Defence pay system to make regular fortnightly deductions. You should contact your pay Office for further assistance with this option.