Excluding dapp contract executions from a code level may create a possible loophole in the tax system so the best way is to whitelist the dapp contracts so they aren’t taxed. You can read more about it here: [Proposal] Exclude Smart Contraction Transactions from the scope of Burn Tax - #70 by dfunk
If the binance whitelist proposal goes through, I will be creating a prop to whitelist high volume dapp contracts so that they can be excluded from the tax.