“I chased a £40k retention for two years. So I built the ledger that never loses it.”
Everyone agreed I was owed it. Nobody released it — it sat in someone's spreadsheet for twenty-four months. So the held figure, the practical-completion date and the defects date live in the ledger now: flagged, dated, and auto-raised on release. It doesn't get forgotten, because I'm not living that again.
No card to start. No per-invoice fees. No 12-month contract. Same price next year.
The big accounting products price per tier, per feature, per transaction. We don't.
“I've sat on the wrong end of a Pay-Less Notice that landed a day late — and still got argued with.”
Under the Construction Act, miss the Pay-Less date and you owe the notified sum in full. The Act doesn't care that you were busy. So the clock counts the days for you — the s.110A and s.111 dates per contract, alerts at T-7, T-3 and T-1, and a draft notice ready to review and sign. You don't miss it, because I have.
Each subcontractor has a contract — original sum, signed variations, agreed retention %. Every application shows: gross applied, less previous valuations, less retention, less CIS — all auto-calculated, visible to both sides. Xero treats subs as generic suppliers; we don't.
Send a UK-VAT-compliant invoice in 30 seconds. Domestic Reverse Charge auto-detected on B2B construction services. CIS deduction applied automatically to subbie lines. Card pay-link on every PDF. Recurring invoices, late-payment reminders, branded statements.
Live bank feed via Open Banking — connected straight to your bank. AI matches transactions to invoices and bills with confidence scoring. Rules engine learns your habits — ‘every TRAVIS-PERKINS line → Materials, nearest active job’. Above 95% confidence, it auto-clears.
Full double-entry produces a live P&L, balance sheet, cashflow statement, trial balance, debtors / creditors aging. Filter by period, project, department. Export to PDF / CSV / Excel. Lock periods after sign-off.
“I file a CIS300 every single month. The big tools make you do it twice.”
Once in their software, once on the Government Gateway. That's the bit I refused to keep living with — verify the subbie, deduct on labour, generate the statement and roll every sub into one monthly return, from one screen. Direct-to-Gateway filing is built and sandbox-tested; it flips on the day HMRC signs off.
Built to connect directly with HMRC Making Tax Digital for VAT, Income Tax and CIS — sandbox-tested end-to-end, production access applied for and awaiting HMRC's sign-off. We flip it live the day approval lands. Until then every return is generated in-app with the digital-links rule preserved end-to-end.
Every subcontractor you invite gets the portal free — unlimited, forever.They apply, watch every valuation, and pull their own remittances and deduction statements without costing you a seat. You both look at the same certified figure — so there's nothing left to argue about.
The bill a typical UK construction firm pays for stitching together what InvoLynx Pro rolls into one product. PLN, AfP, CIS, DRC VAT and the subbie portal are shipping today; the HMRC, bank-feed and OCR rows land through 2026 as we build them.
Retention ledger, free supplier portal, 3-way match, payment runs, audit trail — then all the everyday bookkeeping. Every feature, every seat.
CostLynx priced BoQ → InvoLynx sales invoice with DRC + CIS treatment. SiteLynx compliance gates supplier payment. WorkLynx timesheets feed the payroll journal. One ecosystem.
Straight answers. No sales pitch.
Side-by-side feature tables, honest about both sides, and a one-paragraph migration guide for each.