B2B invoicing for finance teams

Reconcile every invoice against purchase orders and deliver it by email or straight into buyer AP portals. Built in 2026, from $149 a month.

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Acme Corp · INV-10045PO-2026-8801 · Coupa

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ACAcme Corp2mINV-10045 · $28,450 matched

NWNorthwind9mINV-10046 · Hold +5.0%

GXGlobex18mINV-10047 · Sent to Ariba

Verify INV-10045 ($28,450) against PO-2026-8801 and upload to Coupa.10:14

Checked 14 lines, unit prices and PO drawdown

All 14 lines match PO-2026-8801 ($28,450). Uploaded to Acme Coupa as #SUB-99214.Parity confirmed

Portal receiptDownload PDF

Invoicing platform and parity queue

Pario verifies line-item unit prices, quantities and remaining purchase order balances before any invoice leaves your accounting ledger.

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Invoices / Active queue

ACAcme CorpINV-10045 · $28,450Queued2m
NWNorthwindINV-10046 · +5.0%Hold6m
GXGlobexINV-10047 · $9,800Queued11m
INInitechINV-10048 · $6,400Dispatched18m
WIWayne IndINV-10049 · $41,000Dispatched24m

pario/ledger invoices/2026/INV-10045.json +2+3−1−2

@@ -14,7 +14,8 @@ function verifyParity(inv, po) {

1414 const po = loadPO("PO-8801");

1515 if (line.price !== 420.00) {

1515 if (line.price === po.price) {

1616 await sendCoupa(inv, "draft");

1616 await sendCoupa(inv, po.auth);

PR Pario Parity Engine now Approved

Attach po.auth for direct Coupa PO flip.

1717 return inv.id;

1818 }

Purchase order parity for buyer portals

Pario takes its name from accounting parity: every billed line must match the buyer's authorized purchase order before delivery, stopping portal rejections and payment delays.

Line-item reconciliationPrice, quantity & UOM
Cumulative PO drawdownTracks open balance
Audit-ready trailReceipt & diff log

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6 packets verified

INV-10045.json QuickBooks
PO-2026-8801.pdf PDF
INV-10047.xml Xero
Q2-drawdown.xlsx Excel
INV-10048.eml Email
SUB-99214.json JSON

Portal automation and invoice delivery

Portal upload automation

Submits reconciled invoices directly into Coupa, SAP Ariba, Tipalti and Bill.com with receipt capture.

pario/dispatch/INV-10045 #8801 14s Uploading

AC Acme Coupa PO flip $28,450

IngestINV-100452s
ParityPO-88014s
PortalCoupa5s
LedgerSUB-99214Queued

Invoicing email delivery

Delivers formatted PDF invoices and line-item backups to buyer AP inboxes on your schedule.

Delivery rules

4 of 4 on

Auto-send on PO parityDispatch when 0 variances are found
Attach signed PDF & PO diffInclude line-item match summary
Upload to buyer AP portalCoupa, SAP Ariba, Tipalti, Bill.com
Hold variances over 5%Route price drift to finance review

Portal variance quarantine

Holds any invoice that drifts beyond your tolerance and alerts finance before the buyer sees an error.

Parity hold · INV-10046nowLine 3 price $420 exceeds POReview
18 invoices delivered12m0 portal rejections today

Ledger to portal automation

Pulls approved drafts from QuickBooks or Xero and writes back the portal confirmation number.

Pricing and monthly plans

Built in 2026 for B2B finance teams, with monthly or yearly billing.

Starter

Email and portal invoicing for growing teams.

$149 /mo · monthly

Choose Starter

250 monthly invoices
2 buyer AP portals
QuickBooks & Xero sync

Growth Most popular

Line-item PO parity for mid-market teams.

$449 /mo · monthly

Choose Growth

1,500 monthly invoices
Line-item PO parity
15 buyer AP portals

Scale

High-volume billing and custom ERPs.

$949 /mo · monthly

Choose Scale

Unlimited invoices
Unlimited AP portals
Dedicated Slack & SLA

Common invoicing and portal questions

How Pario connects to your ledger and buyer portal.

Supported channels Live in 20 min

QuickBooks & Xero 2-way sync

Coupa, Ariba & Tipalti PO flip

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Which AP portals are supported?

Pario uploads to Coupa, SAP Ariba, Tipalti and Bill.com with receipts.

How does Pario PO parity work?

Every invoice line is checked against the PO for price, quantity and balance.

What happens on a portal mismatch?

Variances over ±5% stay in quarantine so finance can fix the line first.

Can Pario send email and portal?

Yes, each buyer routes approved invoices by email PDF, portal, or both.