✦For consulting firms and agencies

Is answering invoice questions the worst part of your job too?

We built Arnu because every QuickBooks user we knew was hand-managing AR. The system reads the customer's question, pulls context from your accounting and time tracking, routes it to the right person internally, and keeps the thread going until the invoice is paid. You just approve the answers.

14-day trialConnects to QuickBooks, Slack, and JiraSOC 2 · US data residency
Thread · Westwood Strategy LLC, invoice 20432
FROM [email protected] · 2:02 PM
Hi, we can't find hours 128–147 on the invoice. Can you explain what was done in week 11?
Routed to Maria Chen, project lead, Westwood Strategy
ARNU → Maria · 2:02 PM
Customer has questions on lines 128–147. Context: week 11 · timesheet attached. Expected response: 24h.
Waiting for Maria, 2 daysDunning paused · active questionNo reminder sent chasing unanswered
In private pilot with consulting firms across the US.
Pilot partner — NY
Pilot partner — SF
The blind spot

Most overdue invoices aren't stubborn customers. They're unanswered questions.

When a customer asks a question about an invoice, everything stops. Someone needs to check with the project lead. Finance has to chase internally. Meanwhile the invoice gets older. The automatic reminder keeps going out anyway, which makes it worse, not better.

This is a blind spot in every accounting system: they send reminders, but they don't handle the conversation. We measured how much of the average firm's outstanding was stuck in exactly this gap. The number surprised us. That's why we built Arnu.

What QuickBooks does

  • Invoice issued
  • Reminder 1 sent
  • Reminder 2 sent
  • Collections threshold

What actually happens

  • Invoice issued
  • Customer asks a question
  • Waits for project manager
  • Forgotten internally
  • Reminder sent anyway
  • Customer irritated, waits longer
01, How it works

Three scenarios where things usually go wrong.

Imagine a system that answers invoice questions for you, one that talks to your accounting system and your time tracking, and forwards questions to the people who actually worked on the case, automatically. That's what Arnu does. Here's what it looks like in practice.

01

The customer asks a question

Arnu detects that the reply is a question, not a payment confirmation. It routes the question to the right person internally, pauses the dunning sequence automatically, and tracks the internal response until the customer gets an answer. No more questions lost in a finance inbox.

02

The customer disputes the invoice

Arnu logs the dispute, gathers relevant context, time entries, project scope, previous correspondence, and drafts a structured response based on how similar disputes have been resolved before. You review, adjust, approve.

03

The customer goes quiet

After two reminders with no response, Arnu looks at the customer's payment history and behavior. It suggests the next move, a phone call, a personal email from the account owner, or escalation, with reasoning you can see.


02 — Measurement (from real pilot data)

What we measure tells you what we actually built for.

Based on data from our pilot partners. We'll show you what it looks like on yours.

47%
of outstanding was stuck in unanswered questions before Arnu
8%
after Arnu, the rest is routed, answered or resolved
18h
typical time from customer question to internal answer (was: 6 days)
$120K
typical working capital freed up in the first quarter
03, What Arnu does

A dialogue tool, not a dunning tool.

Everything Arnu does is visible and reversible. Set rules per customer segment, pause the whole sequence, or override individual cases.

✦ Core of the product

Customer questions get routed, not ignored.

Arnu detects questions in customer replies, identifies who internally needs to answer, and tracks the thread until the customer has what they need. The dunning sequence pauses automatically while a question is open.

✦ RoutedQuestion detectedWaiting for Maria, 2d
Westwood Strategy LLC, invoice 20432
Customer asked about hours 128–147. Routed to project lead. Dunning paused.

Disputes pause dunning automatically.

When a customer disputes the amount, scope or timing, Arnu logs it with context and holds the dunning sequence. No awkward double-reminders while the conversation is still open.

Dispute loggedDunning paused
Pacific Advisory Group contested lines 3–5. Timesheet attached to thread.

Every action comes with a one-sentence rationale.

No black box. Arnu tells you why it suggests routing, pausing, or escalating, and you see exactly which data it used to decide.

✦ AI suggestsReliable payerPersonal email
Sutton Advisory, invoice 20421
Silent for 6 days after reminder 2. History: pays within 14 days. Suggests account owner follows up.

Your rules, built on AR best practices.

Late fees, interest rates, waiting periods, which segments auto-send, every rule is yours, every template is reviewed against FDCPA and state collection standards, and every message is written in plain English.

Late fee
$25
Late interest
1.5% / mo
Waiting period
14days
"The surprise wasn't how much time we saved. It was how much money we'd had stuck in invoices where we just never got back to the customer's question."
PP
Pilot partner — Managing partner · NY consultancy
04, Integrations

Built for how consulting firms actually bill.

Arnu understands consulting data, projects, hours, phases, not just invoices. One connection to your accounting system and time-tracking tool, and every thread has the right context attached.

Q
QuickBooks Online
Accounting
Invoices, customers, payment status, all in one connection.
H
Harvest
Time tracking
Pulls hours and project context into the thread automatically.
T
Toggl Track
Time tracking
Timesheets attached to invoice questions for instant context.
@
Google Workspace
Email
Send and receive on your own domain address.
M
Microsoft 365
Email
Outlook integration for reply tracking and threading.
S
Slack
Team chat
Route invoice questions to the right person in the channel they already watch.
J
Jira
Project management
Pull project scope and work logged so threads have the full story.
L
Linear
Project management
Sync ticket context to invoice threads for engineering work.
N
Notion
Docs
Pull SOWs, scope docs, and meeting notes when answering disputes.
A
Asana
Project management
Cross-reference deliverables when a customer questions an invoice line.
C
Collections handoff
Collections
Automatic hand-off to your preferred US collections agency when every step is exhausted.
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API & webhooks
Developer
Build your own triggers and pipe into your data warehouse.

Stop having invoice questions hanging over your head.

Book 30 minutes. We'll run your outstanding through the same analysis we did with our pilot partners, and show you where your stuck-in-limbo invoices are hiding.

See pricing