services / DSDillon
Invoicing and Billing Software Development
Take a customer from an approved quotation to a settled account. Build invoices, deposits, recurring billing and payment records around your terms.
Carry the agreed price into the invoice
We design quotation approval, document numbering, customer details, tax fields, currency and payment terms as one flow. Changes to scope remain visible through revised quotations, additional invoices or credits.
A service project may need staged invoices. A retail order may need a deposit and collection date. Recurring agreements need billing periods, renewal conditions and cancellation procedures.
Keep the outstanding balance on the original account
A 2,400 invoice with a 600 deposit leaves 1,800 outstanding. The second payment settles that invoice. Statements retain the original charge and every payment reference.
Credits reduce the amount owed. Refunds record money returned. We test partial returns, cancellation after payment and credit held for a later order.
Connect payments and customer documents
A hosted payment page needs the correct merchant account, invoice identity and supported currency. Verified provider notifications update payment state. Pending, failed and disputed transactions remain visible for review.
The project can include document access, direct invoice delivery, reminders and receipts. Recurring document creation, sending and authorized card collection are separate choices. Delivery and payment confirmation each require their own records.
Preserve the document history
Issued invoices retain the customer details, prices and currency used at issue. Corrections follow a traceable workflow. The accounting map determines when advance billing becomes revenue.
We test expired document links, email errors, duplicate payment notifications, instalments and reminders stopping after settlement. Your accountant approves invoice layouts and tax treatment for the relevant markets.
Before you start
Can clients pay a deposit online?
A supported payment connection can collect and allocate deposits. Provider, merchant entity, currency and customer authorization are confirmed in the build scope.
Can you build billing for retainers?
Yes. We define service periods, recurring amounts, draft review, sending, consent and cancellation handling before enabling collection.
Build the complete workflow
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Tell us what needs to work.
Bring your trading workflow, current software and the problems you need to solve. We will define the build, connections and acceptance checks.
DSDillon Business Systems
POS, accounting and connected operations.
