question about base attack progression.

[Mystic Muse]

where does it say what a class's base attack progression is? Or what their BAB is or whatever. I can't seem to find it in TOB or PHB

[Mongoose87]

It's the very first thing after the level on the chart?

[truemane]

Yeah, when you look at the table of Class Abilities and Levels and such, it's the column that has either +1 or +0 at 1st level and winds up looking like +20/+15/+10/+5 or +15/+10/+5 or +10/+5 at 20th level.

[Glimbur]

Further, if you want to multiclass the rule is that you just take the BAB off the chart for each class. So a Rogue1/Monk1/Bard1/Cleric1 has a BAB of +0. There is a variant rule that changes this called Fractional BAB.

[jiriku]

And further further, this Fractional base attack system, which I endorse as a great way to make the game more multiclass-friendly, is located in Unearthed Arcana.

[Anonymouswizard]

Further, if you want to multiclass the rule is that you just take the BAB off the chart for each class. So a Rogue1/Monk1/Bard1/Cleric1 has a BAB of +0. There is a variant rule that changes this called Fractional BAB.

So with core only you could get to 7th level without gaining any BAB (bard1/cleric1/druid1/monk1/rogue1/sorcerer1/wizard1)

On the origion of PC's spoiler

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So your seventh level and you've already got seven classes. What Base Attack Bonus are you sporting now?

[Zincorium]

Fractional BAB is a good thing to add even if people only use one base class and a PRC or whatever, and they aren't crunching the numbers for max BAB.

Base attack bonus is kind of overrated anyway.