Note that if you are just interested in US sales taxes, and only need to collect tax in the ~1/2 of the states that are part of the Streamlines Sales Tax (SST) project, you can have your tax rate calculation, registration, reporting, and filing all done for
free.
The member states of SST have agreed to pay for those services from several tax SaaS companies. (There is one catch: to avail yourself of this, you must collect tax for all SST states, even though you might be below the threshold in some of them).
The companies participating are Avalara, TaxCloud, Sovos, and Accurate Tax.
For small online businesses I suspect that a lot more can take advantage of this than you might expect. Here's a map showing the SST member states [1]. Although it is missing some big states that you probably do a lot of business in (California for instance), a lot of those big states have quite high thresholds for sales or number of transactions before tax kicks in.
Some of the companies that provide the fee SST service will also add non-SST states for a fee. If you only need one or two non-SST states, it will still probably come out cheaper than using Stripe (and will include reporting and filing).
[1] https://www.streamlinedsalestax.org/