How do you work out a multiclassed character's BAB?


Rules Questions


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Do you just add the two class levels' BABs together? So if I had a Cleric VIII, then Prestige Classed to Vindicator I, my total BAB would be +7/+1?
And do the three Saves work on the same principle of simply adding them?


Add up the BAB from each class at that class's level.
Example:
If you are a Cleric 8/Fighter 2 you have a BAB of +6 from Cleric and a BAB of +2 from Fighter for a total of +8

Then you subtract 5 from that and if you have a number above zero you have an additional attack.

In my example that would be +8-5 = +3 which is above zero. This gives you a +8/+3 when making a full attack (the first at +8 and the second at +3).

- Gauss


I'm not sure what the official ruling is, but I add the fractions together when determining BAB / saves.

For an 8th-level cleric / 1st-level holy vindicator, that'd be...

BAB: (3/4 x 8) + 1 = +7/+2.

Fort: 2 + (1/2 x 9) = +6

Ref: 1/3 x 9 = +3

Will: 2 + (1/2 x 9) = +6

If, on the other hand, you just add the listed values together, you'd arrive at +7 Fort / Will (BAB would be unchanged).

I prefer adding the fractions together so that you do not receive "dead levels" for your BAB / saves (such as when a 2nd-level rogue multi-classes into wizard at 3rd-level; if you add the BAB values together, you get +1, whereas if you add the BAB fractions together, you get +2). Similarly, this prevents characters from raking up all those +2 save bonuses for taking one level in multiple base classes.


Detect Magic, there was an optional rule back in 3.5 that did that but it was not brought forward into Pathfinder. As a result it is a house rule.

- Gauss


Got it, makes a lot of sense! I always wondered how to calculate those second attacks! Thanks very much! :D


The only maths needed is to add the values from the class' tables together.

The other thing I have seen people do wrong are the secondary attacks. You get one at BAB of 6 (+6/+1) and you get a new lower tier attack for every +5 on BAB after that.


Gauss wrote:
Detect Magic, there was an optional rule back in 3.5 that did that but it was not brought forward into Pathfinder. As a result it is a house rule.

Thank you for bringing that to my attention.


NP :)

- Gauss

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