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Inzo for Agencies & Services

Project-based billing that keeps upwith the work.

Taro finishes a project or hits a milestone — Inzo drafts the invoice with project name, milestone, and description ready to go. Retainer subscriptions cycle automatically. Estimates convert to invoices on accept. Each client gets a folder with their full history. Your books match the work, not a stale Friday spreadsheet.

Client Book

Active projects
28
Retainer clients
14
Estimates out
9
Milestones this wk
11
WIP value
$284K
MS

Milestone billed · Pied Piper

Phase 2 design complete · auto-drafted from Taro

$12K
EST

Estimate accepted · Wayne Enterprises

Auto-converted to billing invoice · $36K

$36K
RET

Retainer cycle · 14 clients

Monthly retainers auto-billed and sent

$48K
PRJ

Project complete · Stark Industries

Final invoice ready · review & send

$84K
0AI features built in
0%Auto-posted journal entries
0Native WorksBuddy integrations
The agency reality

You bill by the milestone.
You invoice by the spreadsheet.

01

Milestones complete in Taro. Nobody invoices

The PM marks the milestone done on Monday. The invoice doesn't go out until the AE remembers it on Friday. The client pays four weeks late instead of three. Multiply by twelve clients and your working capital lives at the bottom of the cycle.

02

Retainer customers slip through the cracks

Half your clients are retainer. Someone has a calendar reminder to send the monthly invoice. They're on PTO this week. Two retainers miss the cycle. The client doesn't complain. The cash just doesn't arrive on time.

03

Client folders live in three places

Their estimates are in one tool, their invoices are in another, their payments are in a third, their project history is in Taro. When they ask "what's my outstanding balance and what's coming up?", you spend twenty minutes assembling the answer.

lioInzo bills the way agencies work. Milestone-based. Retainer-aware. Client-organized.
How agencies work on Inzo

Project billing, retainer cycles,all in one client folder.

Milestone billing tied to Taro

Milestone billing tied to Taro

Taro marks a project or milestone complete. Inzo receives the webhook with the project name, milestone, and description. A draft billing invoice is created with the right line items, ready to send. You review, hit send. The client gets the invoice the day the work shipped.

  • Taro project complete → draft invoice
  • Taro milestone complete → draft invoice
  • Project/milestone IDs stored for traceability
Estimates → orders → invoices

Estimates → orders → invoices

Send an estimate to the client. They accept, you convert it to a sales order in one click. Fulfill the work, convert the order to a billing invoice in another click. Revisions tracked end to end. The estimate the client accepted is the invoice they receive — no re-keying, no version mismatch.

  • Estimate → Sales Order → Invoice
  • Expiry tracking on estimates
  • Revision support on every document
Client folders with full history

Client folders with full history

Every client has a profile that shows all their invoices, payments, credits, sales orders, estimates, subscriptions, and linked projects. Activity log per client across the whole relationship. When they ask "where do we stand?", you answer in ten seconds.

  • Unified client view across modules
  • Per-client document upload library
  • Custom payment terms per client
How agencies use Inzo

Three flows that services teams run weekly.

01

Ship the milestone. Bill the milestone

PM marks the milestone done in Taro. The webhook fires. Inzo drafts the invoice with milestone name, description, and the right line items pre-filled. You review and send. The client gets the invoice on the day the work shipped, not the Friday after.

Taro WebhookMilestone MappingOne-click Send
Milestone → Invoice
What agencies ship

Numbers from realservices teams.

We bill on milestones. The gap between "milestone done" and "invoice out" used to be a week. Now it's the time between Taro ticking the box and me hitting send — about ninety seconds.

— Founder, 12-person Design Studio

0

Days faster from milestone to invoice

0%

AI features built in

0

Document types per client folder

0%

WorksBuddy integrations native

Built for every services motion

Project-based, retainer-based,
or both.

Design & Dev Studios

Design & Dev Studios

Milestone-based billing tied to Taro projects. Estimates that convert on accept. Per-client folders with full history. The cycle from work-done to cash-in collapses.

Consulting Firms

Consulting Firms

Monthly retainers per client, project work alongside, expense pass-throughs all in one invoice flow. Inventory tracking for billable hours by category.

Marketing Agencies

Marketing Agencies

Retainer + project hybrid. Estimates → orders → invoices on the project side. Subscription cycles on the retainer side. Recurring revenue visible per client.

Solo Consultants

Solo Consultants

You're the agency. Inzo runs the billing while you do the work. Late fees on the clients who need them. Payment plans on the ones who deserve them.

Agency questions

What services founders ask before they centralise the billing.

QuickBooks and Xero are accounting engines — they stop at the ledger. Inzo runs the full operational loop on top of a real double-entry ledger: estimates, sales orders, payment plans, subscriptions, project billing, OCR for vendor bills, AI escalation advice, native Lio/Taro/Revo integrations. You get the GL plus the operating workflow plus the automation, in one product, with per-org SSO and role-based permissions out of the box.
Six credit-based AI features. Cash Flow Forecast predicts inflows and outflows from open invoices plus scheduled expenses. Payment Behavior Analysis profiles a customer's payment patterns. Payment Reliability Score rates default risk. AR Aging Analysis identifies bucket-level trends across 0–30, 31–60, 61–90, 90+. Overdue Escalation Advice gives per-invoice recommendations. OCR Invoice Scanning extracts line items from uploaded bills. Credits are org-scoped, cost is shown on hover, balance refreshes after each use.
Each external platform fires a JWT-authenticated webhook into Inzo. Lio "Deal Won" creates a draft billing invoice with customer and line items pre-filled, auto-creating the customer if they don't exist. Taro "Project Completed" and "Milestone Completed" each draft an invoice with project context. Revo "Document Signed" creates a draft invoice from the contract terms. When you send a Lio-sourced invoice, a confirm modal asks whether to log the activity back to Lio.
Yes. Subscription invoices support weekly, monthly, quarterly, semi-annual, annual, and custom intervals. On each cycle date the system auto-generates a full billing invoice and emails the customer. Start dates, optional end dates, and active/inactive toggles are all configurable per subscription. Late fee rules apply to recurring invoices the same way they apply to one-offs. Recurring revenue surfaces on the dashboard.
Real double-entry GL. Every financial event — invoice sent, payment recorded, bill opened, expense approved — auto-posts an immutable journal entry with debit and credit accounts. Trial Balance, Balance Sheet, P&L, and per-account ledger update the moment the event fires. Journal entries are reversible for corrections, never deletable, with full audit trail. Every report number drills down to the source row that built it.
Upload a PDF, an image, or a scanned receipt to the bill creation modal. The OCR service extracts vendor name, date, every line item with quantities and rates, taxes, totals. You review the extracted structure, fix anything off, save. The bill then enters the AP chain as a real bill with full line-item detail — not a single-line summary. Same flow works for paper receipts and emailed invoices.
Most teams are live the same day. Configure org profile (currency, timezone, logo), set up tax rates and payment terms templates, build your product or service catalog, import customers and vendors via CSV. Connect Lio, Taro, and Revo with a single OAuth handshake each. New email domains auto-provision an org with default Admin and Employee roles seeded. Enterprise customers get a guided onboarding with a 30-day kickoff plan.

Bill the milestone the day it ships.

See Taro milestone integration, retainer cycles, and unified client folders in a 30-minute demo.

Inzo · AI invoicing and billing

Inzo invoices, chases, and forecasts cash so you get paid on time.

Automate the full billing cycle from invoice to reconciliation, with AI that surfaces overdue accounts and predicts your cash flow.

2.4x
faster payment collection
99.8%
invoice accuracy rate
16
live billing reports
40%
less time on billing admin
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