Trying to figure out when to allow players to reraise after an all-in that isn't a full raise. At most places you play is it:

1- At least half the raise, you can reraise again
2 -Has to be full amount of raise or more to allow reraise

Thanks!

Fixed Limit = 1- At least half the raise, you can reraise again

No Limit = 2 -Has to be full amount of raise or more to allow reraise

Spread Limit = rule varies by house (uses fixed limit rule locally, though I've heard other places can be different)

Fixed limit SHOULD work that way, but many rooms allow raising above the previous raise, and just cap at 3 raises.
(,yes I'm ignore completing the raise here)

Thanks, so that's it just always full bet in NL?

Yes. no limit and pot limt is full bet.
Fixed limit is half bet

Yes. Everything smaller doesn’t reopen betting.

On the flop:
Player A bets $100
Player B calls $100
Player C raises all-in to $199
Everyone else folds
Players A and B can call or fold but not raise

An all-in typically must complete a full raise in order to reopen action to others behind. It is different than applying the 50% rule to a Player who still has chips behind. But in both cases a Player must have enough chips to complete a raise in order for it to be deemed a raise.

There are casinos that treat cash and tournament differently as far as the 50% rule is concerned, but that is a different discussion (perhaps) than OP was looking for.

Another tricky spot above would be what is the next legal raise? IMO it's $299. The 'raise' amount is still 100, but the 'base' bet is now 199, so 100+199 is a legal raise .. not 200. GL

Also depends on the allowed betting increments. In a lot of live 2/5+ games, $1 chips don’t play (postflop) and you can’t bet $299 unless that’s all-in.

Interesting thanks alot. So which one is more likely to make the exception to allow it then, tournaments or cash?

Can you specify which part of that comment you are asking about? The "50%" rule is different from the "half bet reopens the betting" rule you reference in the OP, and they shouldn't have been conflated.

The "50%" refers to the excess chips as a ratio of a full raise that commits you to completing the raise when making a silent bet. For instance, if I raise from $0 to $100, then you silently push $150 into the pot, you will be committed to the $200 raise. If you push $149, you will be committed to the call.

Neither a tournament nor a cash game is likely to make an exception to this rule unless it is not a rule in the first place, which is not the norm.

Tournaments should, and mostly do, have very strict enforcement policies when it comes to the rules in play since it needs to be 'fair' and consistent from table to table so each Player is treated the same.

I did mix in some spots outside your original post .. so ..

It would be VERY hard to find a tournament or cash game where a short all-in is considered a raise, but it is possible if the rule set calls for it to be ruled that way.

It is much more common for a tournament to enforce the 50% rule when a Player has chips behind than a cash game. TDA Tournament rules, which are widely accepted, has specific rules for how to handle 'chip' issues that may occur by Players. Cash games usually require a full raise for it to stand. But again, it comes down to each room's rule set. That's why it's always wise to be aware of spots like this one and to ask the Dealer what the rules are before you try to act and give away your desired action.

Your phrasing 'exception to allow it' is a bit off .. There should be no 'exception', just each room following the rule set in place for the game being played. I may have led you astray a bit, but the more time you spend in the threads here you will find out that there's almost always an outlier to every spot that goes the 'opposite' of the rest of the industry. So you will get a lot of responses that start with .. "It depends .." in these forums since it really, does, depend. GL

Sorry I am referring to allowing the reopening the betting, not whether or not the person is forced to commit to a raise or not