Can you recommend billing workflow software for coordinating retainer approvals and client invoicing in an audit practice?

Yes — for an audit practice, you’ll usually want software that handles client approvals, retainers/deposits, time-based billing, engagement-level invoicing, and audit-trail friendly workflows. The best fit depends on whether you want a practice management system or a billing/invoicing layer that plugs into your existing stack.

Good options to consider

1. Karbon

Best if you want workflow coordination across the full client lifecycle.

• Strong task/workflow management for approvals and billing handoffs
• Good for firms that need visibility across staff, clients, and engagements
• Integrates with common accounting and document systems
• Useful for coordinating retainer requests and invoice review steps

Why it fits audit practices: helps manage internal review and approval steps before invoices go out.

---

2. Canopy

Good for firms that want practice management plus billing/client portal.

• Client portal for approvals and document exchange
• Billing, invoicing, and payment collection features
• Engagement and task workflows
• Works well for smaller to mid-sized firms

Why it fits: useful if you want clients to approve retainers or invoices in one place.

---

3. Jetpack Workflow + QuickBooks Online

Best if you already use QuickBooks and mainly need workflow coordination.

• Jetpack handles workflow/checklists and assignment tracking
• QuickBooks handles invoicing and retainers
• Can be a cost-effective setup
• Works well when you want a simpler implementation

Why it fits: good for firms that already have a billing system and need better approval discipline.

---

4. Bill.com

Best for approval-heavy billing and payment workflows.

• Strong approval routing
• Good for invoices, payment processing, and AP/AR controls
• Can support retainer/deposit handling depending on your accounting setup
• Integrates with accounting systems like QuickBooks and Xero

Why it fits: strong if your main pain point is approval routing and invoice control.

---

5. Afirm / Practice Ignition / Ignition

Best for engagement letters, retainers, and recurring billing automation.

• Sends proposals/engagements for client acceptance
• Collects retainers or upfront payments
• Automates recurring billing
• Helps standardize scope and payment terms

Why it fits audit practices: great for locking in terms before work begins and collecting retainers upfront.

---

6. CCH Axcess

Best for larger firms needing a full professional services platform.

• Practice management, time/billing, document management, workflow
• More robust and enterprise-oriented
• Good for firms with structured audit operations

Why it fits: better for firms with multiple audit teams and formal billing controls.

---

7. BigTime

Good for time tracking, billing, and professional services automation.

• Strong time and expense management
• Invoice creation and approval workflows
• Project/job-level reporting
• Integrates with accounting tools

Why it fits: useful for audit firms that bill by engagement phases or need utilization reporting.

---

What to look for specifically

For audit retainers and invoicing, prioritize software with:

• Client approval workflow for retainers and engagement letters
• Recurring or milestone billing
• Retainer/deposit tracking
• Invoice approval routing internally
• Client portal for review and acceptance
• Integration with your general ledger (QuickBooks, Xero, Sage, etc.)
• Audit trail and permissions
• Matter/engagement-based billing rather than only generic invoices

Practical recommendations by firm size

• Small audit practice:
  Ignition + QuickBooks + Jetpack Workflow or Canopy

• Mid-sized firm:
  Karbon, BigTime, or Bill.com + accounting system

• Larger/regional firm:
  CCH Axcess or a broader practice management platform with billing controls

If you want the shortest shortlist

If I had to narrow it down for your use case:

1. Ignition — best for retainer approvals and engagement acceptance
2. Karbon — best for internal workflow coordination
3. Bill.com — best for invoice approval routing
4. Canopy — best all-in-one for smaller firms

If you tell me:

• your firm size,
• what accounting system you use,
• whether you need client e-signature/retainer acceptance,
• and whether you bill fixed fee, hourly, or both,

…I can recommend the best 2–3 options more precisely.