Vic +5% is a dividend 5% higher than the VIC TAB dividend (profit portion of dividend, not stake).
As an example, Tote +5% wagers are calculated as:
Stake x ((Dividend – 1) x (1+5%))
For example:
Vic TAB dividend: $3.00
Vic Tote +5% dividend: $3.10
$10 stake: $10.00 × (($3.00 − 1) × (1 + 5%)) = $21.00 profit, or $31.00 total return.
Vic Tote +5% Dividend: $3.10
On a $10.00 stake: $10.00 x (($3.00 – 1) x (1 + 5%)) = $21.00 profit ($31.00 total return)