What is the rule about having a hunting licence in texas can i use it in Iowa too?

I highly doubt it amigo. Never heard of a multi state hunting license.

You will have to buy a non-resident license, last I heard they were running somewhere between $450 and $550. Thats crazy, I wouldn't pay it. But I don't have to, I live in Iowa. So I get em waaaaaaaaaay cheaper. I would check out Kansas or Northern Missouri non-resident tags, they are probably cheaper, if you live in Texas those states would be closer to you, and they also have some good deer hunting.

Not only can't you use your Texas license in Iowa, but most states charge extra for hunting permits for out of state hunters. For example, while state residents might be able to buy a particular permit for $20, an out of state hunter will have to pay $300 plus for the same permit.

Only if Iowa is among the list of compact states. Check and see if there is a website for Iowa Board of Nursing. That should give you all the answers you need

Each state issues its own licenses. If you are a Texas resident you would be purchasing an Iowa non-resident license.

I'm real sure you need a separate license for each state.

No you need on in each state.