The short answer
A custom back-office integration connects the systems that run a business, POS, payment processor, accounting, banking, inventory, so data moves without retyping. Real integrations commonly run $20,000 to $100,000 depending on system count and data complexity, and they pay back in reconciliation hours, error rates, and reporting the business finally trusts.
What Does an Integration Project Actually Cover?
The word integration hides four different jobs. Data plumbing moves transactions, orders, and customers between systems on schedule. Reconciliation logic matches processor deposits against POS sales and flags the gaps, which is where most of the business value hides. Workflow automation triggers actions across systems, a new merchant boarded here creates accounts there. And reporting pulls the connected data into numbers an owner reads in one place instead of four tabs.
Scope is counted in systems and edge cases, not screens. Two clean modern APIs connect for a fraction of what one legacy system with a nightly file export costs to tame.
What Do Integrations Cost?
Ranges from 2026 development cost guides, mapped to the shapes that actually occur.
| Integration shape | Typical range | What drives it |
|---|---|---|
| Two modern systems, one-way sync | $20,000 to $40,000 | API quality, data volume |
| POS to accounting with reconciliation | $30,000 to $75,000 | Matching logic, exception handling |
| Multi-system back office, 4 plus systems | $75,000 to $150,000 plus | Legacy systems, custom data models |
| Ongoing operation | 15% to 25% of build annually, per industry guides | Monitoring, API changes, new fields |
What Does the Payback Math Look Like?
A mid-size operation reconciling processor deposits to sales by hand spends real money doing it: a bookkeeper giving it 10 hours a week at $35 an hour is $18,200 a year, before the cost of the errors that slip through. A $45,000 reconciliation integration that removes 80% of that work returns roughly $14,500 a year in labor alone and pays back in about three years on labor, faster the moment it catches its first mispriced processing month or missing deposit.
The strategic payback is bigger and harder to invoice: owners who trust their numbers make faster decisions, and month-end closes in days instead of weeks.
When Is Middleware or Native Integration the Right Choice?
Custom pipes are not always the answer. If both systems are mainstream, check the native integration first: POS platforms ship accounting connections that cover standard cases at subscription prices. Middleware platforms cover the next tier, standard connectors with light mapping, at monthly fees far below a build. Custom integration earns its cost when the logic is yours: reconciliation rules, residual calculations, underwriting handoffs, or any flow where a legacy system, a custom system, or a business-specific rule sits in the middle. Buy the commodity connections, build the ones that encode how your business actually works.
How Do You Scope One Without Surprises?
The questions that make an integration quote real.
- Inventory every system, its API quality, and who owns its credentials
- Write the reconciliation and exception rules in plain language first
- Decide the source of truth per data type before anyone writes code
- Demand monitoring and alerting in scope: silent sync failures are the classic disaster
- Budget the published 15% to 25% annual operation cost; APIs change under you
- Check native and middleware options first, and keep them for the commodity flows
Commonly Asked Questions
- How much does a back-office integration cost?
- Per 2026 development cost guides, simple two-system syncs run $20,000 to $40,000, reconciliation-grade integrations $30,000 to $75,000, and multi-system back offices $75,000 to $150,000 plus, with 15% to 25% annually to operate.
- How long does an integration project take?
- Weeks for clean two-system syncs, two to five months for reconciliation-grade work across several systems. Legacy systems with file-based exports are the usual schedule risk, which discovery should surface before pricing.
- What breaks integrations after launch?
- API changes, new fields nobody mapped, and silent credential expirations. That is why monitoring and an operating budget belong in the original scope; an unwatched integration degrades quietly until month-end explodes.
- Does Batch Group build integrations for businesses it does not process for?
- Yes. The pipelines, APIs, and integrations practice serves merchants and enterprise clients generally, though payments-adjacent integrations are where the team's edge is sharpest. [TODO: confirm with Tristan] typical integration engagement minimums.
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