Online Automated Clearing House (ACH) payment billing services have revolutionized how businesses handle financial transactions. Focusing on electronic transfers rather than traditional paper methods like checks and cash exchange, ACH billing services streamline processes, increase efficiency and improve cash flow management. Amidst a sea of available services, here are some of the best deals on the internet today you might want to consider for your business.

First on the list is Square. Revered for its suite of financial tools, Square ACH billing functions allow you to send invoices with ACH payment options directly to your clients. With a processing fee of just 1% per transaction ($1 minimum), Square remains an affordable option for businesses of all sizes. Customer services like chargeback protection and dispute management add a layer of financial security that is hard to ignore.

The next option worth discussing is Melio. With its focus on helping small businesses manage their expenses remotely, Melio's ACH payment service stands out for its free transactions. Yes, you read that right. Melio charges absolutely nothing for ACH transfers, offering a fully-integrated payment platform that records transaction details and syncs with accounting software like QuickBooks seamlessly.

Alternatively, consider PaySimple for its robust features and flexibility. This platform doesn't just allow ACH transactions – it also supports credit card payments, e-checks, and even cash transactions. Even though it charges a standard flat rate of $59.95 per month, it's well worth the price with its offering easy-to-use digital features and personalized customer support. Its all in one platform allows tracking of customer information, recurring billing, invoicing, and payment acceptance.

Another noteworthy ACH payment service is Dwolla. Known for its bank-to-bank transfers, Dwolla prides itself on its secure, efficient and cost-effective payment system. Pricing starts at as low as $.05 per transaction or can be custom based on your needs. It also ensures high data security measures, making it stand out among its peers.

Lastly, consider adding Stripe to your list. While it initially gained popularity for processing credit card payments, its ACH services have garnered significant attention recently. Known for its simplicity of integration and extensive APIs, Stripe’s ACH payment service charges 0.8% per transaction, at a cap of $5.

The range of online ACH payment billing services options is indeed vast, and the choice ultimately depends on the unique needs of your business. Regardless of your business size or operations, adopting these electronic systems promises streamlined financial management coupled with the convenience you cannot overlook in today's digital era. The platforms highlighted above are making massive strides in facilitating business brand transactions making them worth considering.