'Lay bets are like laying the Odds or Place to Lose bets, except with different odds. I think the sister site here indicated this: If not true, does anyone have a list of Vegas casinos that charge lay vig only on a win, or will I need to call each casino (and what kind of run-around can I expect with such a question given they don't seem to publish these rules on their websites)? I have not made a trip out to Vegas yet, but I've read elsewhere that all or nearly all Vegas casinos, for lay bets, charge vig on a win, rather than upfront.