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Sanso for Construction: Invoices, Subcontractors, and Cash Flow

Sanso manages accounts payable, subcontractor invoicing, and payment tracking for construction companies so you can focus on building instead of chasing paperwork.

Construction financial management: job-site and subcontractor invoices checked and tracked automatically

The Problem

In construction, money doesn't get lost on the job site. It gets lost in the paperwork around it. A construction business means dozens of material invoices, subcontractor progress statements to validate, rented equipment, billing that happens in stages (deposit, progress invoices, change orders, final invoice, retainage), and clients who always pay later than planned. Every document has to be checked, matched to the right job, and paid at the right time. And let's be honest: between two jobs on site, who really has time to stay on top of construction financial management, day in and day out?

Job-site and subcontractor invoices piling up faster than you can check them?

Sanso puts AI in charge of capturing, checking, and reconciling your construction invoices, job by job.

Book a call

Two things, on their own, decide the health of a construction business. The first is job profitability. And it gets hard to track fast once you're juggling a lot of labor, suppliers, and subcontractors. To know, mid-project, which job is making money and which one is going sideways, every expense has to be matched to the right job. The second is cash flow. In construction, what sinks a company isn't a lack of work: it's the cash flow gaps on contracts. A job that's profitable on paper can still drag the whole business down if it's poorly financed while it runs. I'm Amalia Bercot, co-founder and CEO of Sanso, and that's exactly the work we set out to take off the shoulders of construction professionals.

Sanso: AI-Powered Construction Financial Management

Sanso is a financial management service that runs on AI. Put simply: the AI does the work. It captures your job-site and subcontractor invoices, checks them before payment, prepares and sends your client invoices at the right time, follows up with clients who are slow to pay, reconciles your bank transactions, and keeps your profitability up to date, job by job. This is a long way from construction invoicing software you'd have to learn to operate after hours. It's a service that does the work for you.

And there's one detail that matters when the job schedule is already packed: no new platform to learn. Sanso plugs into the tools you already use (your accounting software, like Pennylane; your bank, like Qonto; your inbox; your Excel) and the AI takes care of the rest in the background. The results land directly where you work, in your own tools. As for reaching us, it's a bit like calling in a site manager for backup: by email or WhatsApp, in plain language.

The idea fits in one sentence. You delegate job-site invoice management and the financial tracking of your contracts, the AI handles all of it continuously, and you keep your hands on what really matters: building and running your jobs.

Key Capabilities

The AI Captures All Your Job-Site Invoices, on Every Channel

No more chasing invoices for materials, equipment rental, and subcontracting. Sanso's AI collects them for you, wherever they arrive. It reads your inbox and pulls out the real invoices, setting aside quotes, delivery notes, and sales follow-ups along the way. It connects to supplier portals to fetch the ones that are only available online. And it catches the documents you send it on a dedicated WhatsApp channel: a paper invoice photographed on the job site, for example. It will even chase suppliers and subcontractors on its own when an invoice is missing.

The AI Checks Your Supplier and Subcontractor Invoices

This is where the money is won or lost in construction. Before anything gets paid, Sanso's AI reviews every supplier invoice and every subcontractor progress statement: it matches the billed amount against the approved quote and the purchase order, spots progress discrepancies, detects duplicates, and checks the VAT. A crane billed for a month when the purchase order called for two weeks. A subcontractor progress statement that exceeds the signed contract. The same work billed twice under two different labels. The AI catches all of it before you pay. The result: you stop paying for discrepancies nobody had time to check.

The AI Tracks Your Profitability, Job by Job

To know whether a job is profitable, every expense has to be matched to the right job, even when a single supplier invoice covers several operations at once. Sanso's AI reads each document, understands what it's about, and allocates it to the right job or the right cost center. Even when a document mixes several jobs, or the line labels don't quite add up. Your job costing finally becomes usable day to day, without a single entry on your side. So you see, job by job, where you're making money and where things are going off track, while there's still time to act.

The AI Handles Progress Billing and Tracks Your Retainage

A job isn't one invoice. It's a deposit, progress invoices to submit at the right pace, change orders to price along the way, a final invoice, then retainage to release once the punch list is cleared. Sanso's AI works from your contracts and quotes to prepare each client invoice at the right time and for the right amount, and to spot work that's been done but not yet billed. In small businesses, roughly 5% of invoices are simply never created: the work is done, but nobody thought to bill it. At construction-job amounts, that oversight stings. With Sanso, it doesn't happen anymore.

A job that's profitable on paper, but cash flow getting tight?

Sanso's AI bills your progress invoices on time and chases overdue payments without delay, so every job funds itself.

Book a call

The AI Handles Payment Follow-Up for You

Getting paid on time, in construction, is often what separates a profitable job from one that drains your cash flow. Sanso's AI runs personalized, multi-channel collections (email, SMS, phone). Not just a stream of automated reminders. If a client disputes a progress invoice or flags an error, the case is handled end to end, until the payment comes in. You stop playing bill collector with your clients, and your cash flow no longer depends on your ability to send reminders after hours.

The AI Reconciles Your Accounts in Real Time

For every bank transaction, the AI finds the matching purchase or sales invoice and updates its status. At any moment, you know who has paid, what's pending, and what's late. No more ticking off payments by hand on Sunday nights. And the AI catches even the cases that standard automatic reconciliation lets slip: labels that don't line up, amount discrepancies, date gaps between a progress invoice and its payment, partial payments.

An AI Supervised by Humans

Everything Sanso does rests on an AI that learns how your business works over the months. But on sensitive matters, it never works alone. Our operators supervise, handle exceptions, and settle the tricky cases. Between 80% and 99% of the work is automated, with 100% reliability. And that's the whole difference.

Why Construction Businesses Choose Sanso

  • Your purchases are checked. Every supplier and subcontractor invoice is screened against the quote and the purchase order before payment. No more discrepancies and duplicates slipping under the radar.
  • You steer every job. All expenses are matched to the right job, and you see in real time which jobs are making money and which are slipping.
  • Your cash flow can breathe. Progress invoices, deposits, and retainage are billed at the right time, and overdue payments are chased without delay.
  • No new tool to learn. Sanso works inside your existing tools. No construction invoicing software to pick up, no interface to tame.
  • No commitment. You start when you want, you stop when you want. No HR risk, no hiring to run.

How It Works

  1. Onboarding. In a few days, we plug into your existing tools (accounting, bank, inbox, Excel), without disrupting your jobs.
  2. The handoff. The AI gets to work: capturing and checking job-site and subcontractor invoices, progress billing, client payment follow-up, account reconciliation. All within the scope you hand over to us.
  3. Your rules. You set what matters: which discrepancies to block before payment, how often to submit progress invoices, which clients to handle with care, and which approvals stay in your hands before an invoice goes out or a subcontractor gets paid.
  4. Continuous work. The AI runs 24/7, with no days off and no weather delays. Nothing piles up, nothing falls through the cracks.
  5. Your visibility. Everything lands in your own tools, and you write to us by email or WhatsApp whenever you need.

The Results You Can Expect

Control, first. Every job-site and subcontractor invoice is verified before payment, which eliminates discrepancies, duplicates, and work billed twice. On jobs where purchases make up most of the budget, that's margin recovered.

Cash flow under control, next. Progress invoices billed on time, retainage tracked, overdue payments chased without delay, bank reconciliation always up to date. In short, visibility into each job's cash that on-the-fly management simply can't give you.

And then a real read on your profitability. Job by job, you know what works and what doesn't. Enough to price your next quotes with the right numbers in hand, rather than by gut feel.

Getting Started

If job-site invoices are falling behind, if you're not quite sure which jobs are actually profitable, or if cash flow gets tighter contract after contract, let's talk. In a few days, Sanso plugs into your tools and the AI takes over all the work, from invoice capture to payment collection. The simplest way to see what that would look like for your business is to book a call with our team.

Free yourself from finance admin

Book a call

Frequently asked questions

Is Sanso construction invoicing software?
No. Sanso is a service that runs on AI, not construction invoicing software you'd have to learn. The AI does the work (capturing and checking job-site and subcontractor invoices, progress billing, payment follow-up, reconciliation), not you. No new platform to log into: the AI works inside your existing tools and the results land directly where you already work.
How does Sanso handle my subcontractors' invoices?
Before anything gets paid, Sanso's AI matches every subcontractor progress statement against the signed contract, the approved quote, and the purchase order. It verifies the billed progress, spots discrepancies and overruns, detects duplicates, and checks the VAT. And you keep control of the sensitive approvals: Sanso prepares the check, you decide to pay.
Does Sanso handle progress billing and retainage?
Yes. The AI works from your contracts and quotes to prepare each progress invoice at the right time and for the right amount, track the final invoice, and release the retainage once the punch list is cleared. Nothing falls through the cracks, including the steps that stretch over several months.
Can Sanso track the profitability of each job?
Yes. The AI matches every expense (materials, subcontracting, equipment rental) to the right job, even when a single invoice covers several. Your job costing stays up to date on its own, and you see, job by job, what's making money and what's costing more than planned. All without a single entry on your side.
Does Sanso also handle client payment follow-up?
Yes. The AI runs personalized, multi-channel collections (email, SMS, phone), not just a stream of automated reminders. If a client disputes a progress invoice or flags an error, the case is handled end to end until the payment comes in. You no longer have to chase your clients yourself.
Does Sanso work as well for a trade contractor as for a general contractor?
Yes. Sanso's plan is calibrated to your volume of operations, whether you're a trade contractor with two or three jobs running at once or a general contractor juggling a whole string of subcontractors. In both cases, the AI captures invoices, checks purchases, handles progress billing, and tracks cash flow. The scope you hand over adapts to your size and your needs.
Does Sanso replace my accountant?
No. Sanso doesn't do statutory accounting or tax filings. The AI takes over the bookkeeping and day-to-day financial operations (job-site and subcontractor invoices, invoicing, payment follow-up, reconciliation), so your accountant receives clean and complete data. The two roles complement each other; they don't step on each other's toes.
How much does Sanso cost for a construction business?
Sanso runs on a monthly plan calibrated to your volume of operations (number of invoices to process, jobs to follow, cost dimensions to track). No per-transaction billing, no per-user pricing. Plans range from $300 to $2,000 per month, which, for the smallest businesses, is less than a part-time hire at the French minimum wage. And always with no commitment, we insist.
How long does setup take?
A few days, no more. We plug into your existing tools (accounting, bank, inbox, Excel) and the AI gets to work without disrupting your jobs.
Is my data safe?
Yes. Sanso is GDPR-compliant and hosts data in the European Union. Since the AI works inside your existing tools, your data stays where it is, with controlled and traceable access. Sanso is also CASA-certified by Google for access to Google Workspace data.

Free yourself from finance admin