Weekly national estimates of submitted same-sex marriage postal surveys will soon be published by the Australian Bureau of Statistics.
An estimate on the number of returned surveys will be published by 5pm each Tuesday until the survey closes on November 7.
However, definite participation rates will not be available until the results are released on November 15.
"These updates may encourage participation by those who have not yet responded and will inform reasonable public expectations about the likely final level of response," deputy statistician Jonathon Palmer said.
The main driver behind the estimate will be Australia Post's assessment of the number of containers of sorted envelopes, rather than counts of individual forms.
The ABS will then weigh up other factors, including responses received through other channels, and allow for some damaged and invalid forms.
