Business Central for construction contractors: job costing, retainage, change orders — what's native, what needs an app, and when to choose something else

Bramvia — Business Central Experts

Business Central handles project accounting, job costing, WIP and subcontractor management well. It does not natively do AIA progress billing, retainage or certified payroll — those come from AppSource apps. An honest map for US contractors of what fits, what to add, and when Acumatica or Sage is the better answer.

Short answer: Business Central is a strong fit for specialty contractors, MEP, industrial services and project-based businesses that need job costing, WIP, budgets versus actuals, subcontractor purchasing and equipment tracking inside one finance system. What it does not do natively: AIA G702/G703 progress billing, retainage on both receivables and payables, certified payroll, and lien waiver tracking. Those exist as AppSource apps from construction specialists, and with one of them installed Business Central covers most US contractors under $100M. For general contractors with heavy AIA billing, union payroll and complex retainage across hundreds of subs, Acumatica Construction or Sage's construction products are purpose-built and we'd say so. Here's the honest map.

Next step: walk the full construction cycle in the demo below, then bring one live job to a free 30-minute assessment: we will show it with your numbers.

What's native and good

What needs an app

The construction apps on AppSource for Business Central are mature; the combination is what most partners in this space actually implement. Budget them as a line — typically a monthly subscription per user or per company.

When to choose Business Central

• You're a specialty or industrial contractor where job costing and purchasing discipline matter more than AIA billing volume.
• You run on Microsoft 365 and want Teams, Outlook and Excel connected to the job.
• You have multiple entities — per-project LLCs, a service division, an equipment company — and consolidation is a monthly pain.
• Your current system is QuickBooks with job costing in spreadsheets, or an aging on-premises system.
• You want the AI agents for subcontractor invoices and expenses now.

When to choose something else

• AIA billing is the core of your month and retainage runs across hundreds of subs on both sides: Acumatica Construction or Sage Intacct Construction / Sage 300 CRE are purpose-built. Acumatica compared.
• Union payroll with complex fringe is your biggest process: pick the payroll first, then the ERP that integrates with it.
• Field-first — daily logs, drawings, RFIs are where the company lives: Procore is the system; the ERP is finance behind it.

Job costing done right

Three disciplines that decide whether the numbers mean anything:

1. POs for every subcontract and material order, against the job and phase. Committed cost only exists if the PO does.
2. Time posted daily by job and task, from the field, on a phone. Weekly timesheets from memory are fiction.
3. Budget by phase, not just by job. "The job is 10% over" leads nowhere; "concrete is 30% over and framing is under" leads to a conversation with the sub.

With those three, WIP is a report, not a reconstruction, and the 13-week cash forecast — which contractors need more than anyone — becomes possible.

The whole construction cycle in Business Central

From estimate to closeout: walk the cycle below and see what Business Central records at each step. Try the scenario where a subcontractor's compliance paperwork has expired.

1. Estimate and bid: quantities, unit rates and margin per cost code.
2. Purchasing and commitments: POs charged to the job and cost code, so committed cost shows before invoices arrive.
3. Subcontractors: contracts, insurance certificates and lien waivers tracked per vendor; payments held when something has expired.
4. Field reports: hours, equipment and materials from a phone.
5. Cost vs budget: variance per cost code and estimate at completion, feeding the WIP schedule (over/under billing).
6. Pay applications: progress billing in the AIA G702/G703 format, with retainage held.
7. Collections and cash: pay apps collected, subcontractors paid, cash forecast per job.
8. Closeout: final account, retainage released, real margin per job.

We're a commercial general contractor. Can Business Central handle construction job costing, retainage and subcontractor management? Job costing and subcontractor management, yes, natively: budgets by cost code, committed and actual cost, WIP, and subcontractor purchase orders tied to each job. Retainage and AIA G702/G703 progress billing need a construction app from AppSource. For large general contractors with heavy AIA billing, union payroll and complex retainage across hundreds of subs, a construction-specific ERP can be the better fit, and we'll tell you if that's your case.

Can Business Central do percentage-of-completion revenue? Yes, natively, with WIP methods per job.

Retainage? Via an AppSource construction app, or a small extension for simple cases. Not native — say so in scope.

Equipment costing? Resources with cost per hour charged to jobs; depreciation via fixed assets.

We're on QuickBooks with a spreadsheet for jobs. That move is one of the easiest, and job costing is usually the reason.

Running jobs in the UK as well? CIS, the domestic reverse charge and retentions work differently: Business Central for UK contractors.

Contractor outgrowing your system? Free assessment, no commitment — including "Business Central isn't the right fit" when it isn't.

Bramvia · bramvia.net

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