1099-K For Bonsai Payments
If you use Bonsai Payments and are based in the US, the IRS requires Bonsai to send 1099-Ks only when certain criteria are met (see 1099-K information here).
1099-K For Stripe Payments
1099-K For PayPal Payments
To learn more about 1099 forms and W-9s from Bonsai, this page has more detailed information.