Are the rules really that static that once you know the trick it will last for years if not decades? Or do you have to pay a staff yearly to keep up with the s

Are the rules really that static that once you know the trick it will last for years if not decades? Or do you have to pay a staff yearly to keep up with the small changes to stay a little ahead of the tax law to make sure you have all the `i`s doted and all the `t`'s crossed less pay overwhelming fines?