No avalara is useless in Texas as is Taxjar
Texas allows the business to decide if they will pay sales tax using cash or accrual basis - both software companies are ONLY accrual based sales tax with no option to change basis. Their laughable suggestion is to manually do the computations for sales tax payable if you are cash based, make adjusting entries in the sales tax payable account, then pay sales tax - and they want to be paid too. Explain that to an auditor!
Both software companies work off the ship to address, which is fine for those businesses who travel, but for stand alone or internet sales, that would require that you add in your own address as the ship to address, more work than needed