Custom payment and billing software
Short answer: ANTLR Tech builds payment software for companies that have outgrown spreadsheets and disconnected apps — payment flows — deposits, splits, terms and gateways — wired into jobs and invoices, not stuck in a separate merchant dashboard. A first release typically ships in 6–14 weeks.
- Serving
- Worldwide
- First release
- 6–14 weeks
- Pricing
- Fixed, after planning
- Ownership
- Yours, in full
Payment software, answered directly
What is payment software?
Payment software from ANTLR Tech is payment flows — deposits, splits, terms and gateways — wired into jobs and invoices, not stuck in a separate merchant dashboard. It is built for your operation rather than configured from a product, so the screens follow the way your team already works. Service, wholesale and subscription businesses with deposits, progress bills or terms.
How much does payment software cost?
It depends on scope, integrations and how many locations you run — so we don't publish a number that would be wrong for most people. What we do commit to is the shape: a short paid discovery, then a fixed price for a defined first release that you approve before any production code is written. No open-ended billing, and no surprise at the end.
How long does it take to build?
A first working release lands in 6–14 weeks from kickoff. We run two-week cycles with a demo at the end of each, so your team is using part of the system while the rest is still being built — rather than waiting for a single reveal at the end.
Who is payment software for?
Teams whose money movement doesn't match Stripe's happy path. Service, wholesale and subscription businesses with deposits, progress bills or terms. If an off-the-shelf product already fits without workarounds, we will say so — custom software only pays when the process is specific enough that rented tools fight you.
What’s included
What’s included in a payment software build
Payment software that respects how you bill — not a second checkout toy.
- 01
Checkout flows
Card, link, terms or deposit.
- 02
Gateway integration
Stripe and the rails you need.
- 03
Payment plans
Schedules tied to milestones.
- 04
Reconciliation
Match payouts to invoices.
- 05
Refunds & credits
Adjustments with an audit trail.
- 06
Multi-currency
Where you sell, when you need it.
- 07
Receipts
Customer-facing proof that matches the job.
- 08
Finance export
Into your ledger cleanly.
Operators already running on it
−62%
Dispatch moved off the whiteboard. Four depots now plan from the same board, and invoicing takes hours instead of days.
Halden Logistics
11 days
Quote to production start, down from twenty-six. Estimators and the floor read the same job record.
Cedarline Mfg.
15 hrs/wk
Returned to the office team. Job sheets, parts and signatures arrive as the crew finishes, not three days later.
Northbay Supply
How a payment software project runs
01 · 1–2 weeks
Discover
We map how work moves today, exceptions included, before anything is built.
02 · 1 week
Plan
A phased build, a fixed first release and a cost you can approve.
03 · 4–12 weeks
Build
Two-week cycles with your team testing as we go — live beside the old process first.
04 · Ongoing
Improve
New rules, branches and reporting as the operation grows.
Questions buyers ask about payment software
Is this a generic payment software product?
No. Payment software from ANTLR Tech is built around how your team already works, then replaces the spreadsheets and disconnected apps holding that process together. You are not configuring someone else's product to fit — the screens follow your steps, your terminology and your exceptions.
Can payment software integrate with what we already use?
Yes. Accounting, payments, email and the systems you intend to keep stay connected rather than being replaced for the sake of it. Anything with an API is in scope, and we agree the integration list during planning so nothing surfaces as a surprise mid-build.
Who owns the software?
You do. The repository, the hosting accounts and the data are yours from day one, documented at handover so another team could pick it up. There is no seat licence, and no fee that exists only to keep you with us.
How small can a first payment software release be?
One workflow your team runs daily. We deliberately scope the first release to the narrowest slice that removes real manual work, because a narrow release in production teaches us more than a wide one still sitting in staging. The rest follows once it is earning its keep.
Do we need a written specification before starting payment software?
No. Most clients arrive with a problem rather than a spec. Deciding what to build first — and what to leave alone — is the work of the discovery stage, and you keep the process map that comes out of it either way.
Can it replace the system we run today?
Usually, yes. We migrate historical records, run both systems in parallel for one cycle, and cut over only once your team confirms the new one is faster for daily work. Nothing is switched off before that point.
Other systems we build
Systems that work alongside payment software
Same system, by industry
Payment software by industry
Each opens the payment software build for that industry, by region.
Talk to an engineer
Tell us how money actually moves.
Deposits, terms, splits — we'll map the payment system. A 45-minute working session — you leave with a process map and a recommendation, whether or not you hire us.