Your best bet is Stripe in most cases. They have a robust API, and a simple payment scheme as far as handling interchange and fee structures. However, it makes sense to find someone like myself (a dev payment processor) when you fill two critera: 1) an average transaction size of $25 or greater, 2) a monthly transaction volume of over $5,000. Until both of those criteria are met, it makes more sense to process through Stripe or Square because their fees will be lower and there is more hand holding on the API side.
I board most of my business with Priority Payment Systems because they have an API that I like, with lots of documentation and good relationship managers. This is just my opinion based on my years in the payments and development space, so do some searching before you settle with something.
Your best bet is Stripe in most cases. They have a robust API, and a simple payment scheme as far as handling interchange and fee structures. However, it makes sense to find someone like myself (a dev payment processor) when you fill two critera: 1) an average transaction size of $25 or greater, 2) a monthly transaction volume of over $5,000. Until both of those criteria are met, it makes more sense to process through Stripe or Square because their fees will be lower and there is more hand holding on the API side.
I board most of my business with Priority Payment Systems because they have an API that I like, with lots of documentation and good relationship managers. This is just my opinion based on my years in the payments and development space, so do some searching before you settle with something.