Your advantage or disadvantage if you play basic strategy varies with the rules and number of decks used. Current Blackjack News (subscribe here) is a good source for keeping up to date with the rules at various casinos and your advantage or disadvantage. Commonly you are at a disadvantage of about 0.5% with basic strategy. Table 4 contains more detail on estimating the casino’s edge right after a shuffle. The starting point depends on the number of decks used. Simulation shows that a basic-strategy player playing with the benchmark rules has an expectation of 0.01% for one deck, -0.32% for two decks, and -0.5% for four or more decks. The negative signs mean the casino has an edge. The rest of table 4 contains numbers that you can add to one of those starting points, depending on how the rules you face vary from those benchmark rules.

### Table 4 Player Edge

 benchmark: one deck.................................................................................... 0.01% benchmark: two decks.................................................................................. -0.32 benchmark: four decks................................................................................. -0.49 benchmark: six decks.................................................................................... -0.54 benchmark: eight decks................................................................................ -0.57 to the above add the following: rule change in player edge dealer hits soft seventeen........................................................................... -0.20% double after splits......................................................................................... 0.14 double ten & eleven only............................................................................. -0.17 double nine, ten & eleven only.................................................................... -0.08 resplit aces (if four or more decks)............................................................. 0.08 late surrender................................................................................................ 0.08 early surrender.............................................................................................. 0.6 or 0.7 lose all on doubles/splits versus natural.................................................... -0.11

Early surrender gives the player 0.6% (dealer stands on soft 17) or 0.7% (dealer hits soft 17), of which 0.24% is against 10 and the rest is against ace. Table 4 allows you to find your expectation for the first hand after a shuffle. These are simulation results, and thus contain a small amount of random error. To a small extent, the effect of a given rule also depends on the number of decks used. The best presentation of how your edge after a shuffle depends on the rules is BJedge, an inexpensive software product.