Business type · Consulting firms

Finance and software tools for consulting firms

Consulting firms sell time and expertise. The finance work is billing accurately, getting paid on time, rebilling expenses and paying associates.

6 jobs coveredUpdated October 2026Independent editorial

A consulting firm sells time and expertise, so the finance work is billing accurately, rebilling expenses and getting paid on time, while paying associates properly.

This guide covers six jobs, from billing to professional liability cover, with tools to consider for each. A card per client or project, such as Wallester's virtual cards, makes expense rebilling simple.

How we chose the tools

  • Each tool is matched to one job this type of business has to do.
  • We favour tools that are available to small and growing businesses.
  • Where several tools fit, we say how they differ.
Consulting firms

What consulting firms need, and the tools that do it

This is general information, not financial or legal advice. Tools are listed by how well they fit the job, and some links may earn us a commission.

Billing time and rebilling expenses

Unbilled hours and forgotten expenses are lost revenue. Software that tracks time and turns it into invoices closes the gap.

What to look for

  • Time tracking linked to invoices
  • Expense rebilling
  • Recurring invoices for retainers

Our picks

  • FreshBooks

    Invoicing, time tracking and expenses in one tool, built for service businesses.

  • Xero

    Multi-currency accounting with many integrations.

  • QuickBooks

    Widely used by US accountants.

Paying client expenses and travel

Travel and project costs are paid up front and rebilled. A card per client or project makes rebilling straightforward.

What to look for

  • Cards per client or project
  • Limits on each card
  • Receipts that sync to accounting

Our picks

  • Wallester Business

    Free plan with 300 virtual cards, so each client or project can have its own.

  • Pleo

    Receipt capture for teams in Europe.

  • Brex

    US corporate card platform.

Getting paid by clients abroad

International clients expect to pay in their own currency. Local account details avoid delays and bank margins.

What to look for

  • Local account details in client currencies
  • Clear conversion pricing
  • Fast settlement

Our picks

Paying associates and subcontractors

Specialist associates are often contractors in other countries. Contracts and compliant payments protect you both.

What to look for

  • Contracts that suit local rules
  • Payments in their currency
  • Compliance support

Our picks

  • Deel

    Contracts and payments for contractors and employees abroad.

  • Remote

    Contractor payments and employer-of-record.

  • Gusto

    US payroll and contractor payments.

Managing the pipeline

Consulting runs on referrals and repeat work. A CRM keeps proposals, follow-ups and renewals from slipping.

What to look for

  • A pipeline you can see at a glance
  • Email logging and reminders
  • A free or low-cost tier

Our picks

  • HubSpot

    A free CRM tier with deal pipelines and email tools.

  • Pipedrive

    A visual sales pipeline for small teams.

  • monday.com

    Work management with a CRM product.

Professional liability cover

Clients can claim if your advice causes them a loss. Professional liability, or professional indemnity, cover is often required by clients.

What to look for

  • Professional indemnity or liability cover
  • Limits that match client contracts
  • Cyber cover if you hold client data

Our picks

  • Hiscox

    Professional and general liability for small businesses.

  • Simply Business

    UK broker that compares several insurers.

  • Next Insurance

    Online cover for US small businesses.

In depth

The finances of a consulting firm: billing, expenses and associates

Selling time and expertise

A consulting firm earns by billing time, projects or retainers. Revenue depends on how many hours are billable, at what rate, and how quickly clients pay. The finance work is mostly capturing time accurately, invoicing promptly and keeping collections on schedule.

Billing models

  • Hourly or daily rates reward accurate time tracking.
  • Fixed-price projects reward scoping well and managing change requests.
  • Retainers give predictable income and are best billed in advance.
  • Milestone billing spreads risk on longer projects.

Expenses and rebilling

Travel and project costs are paid up front and rebilled to the client. A card per client or project, with receipts attached when you pay, makes rebilling straightforward and reduces disputes. Agree in the contract what is rebillable and whether you add a handling fee.

Associates and subcontractors

Specialist associates are often contractors, sometimes abroad. Use written agreements that cover scope, rates, confidentiality and who owns the work, and check classification rules in the associate's country.

Getting paid on time

Invoice at the milestone or month end without delay, state terms on the proposal, and follow up on a schedule. Large clients may pay through procurement systems that need purchase order numbers on the invoice.

Common mistakes

  • Under-recording time and giving work away.
  • Forgetting to rebill expenses.
  • Starting work without a signed agreement.
  • Relying on one client for most revenue.
  • Carrying no professional liability cover when clients require it.
FAQ

Common questions

Pay client costs on a card tagged to the client or project, attach receipts, and add the cost to the next invoice. Tools that link cards to accounting make this largely automatic.

State payment terms on proposals, invoice on time, offer easy payment methods, and use automatic reminders. A deposit on new work also helps.

Often yes. Clients and contracts frequently require it, and it covers claims that your advice caused a loss.

It depends on how they work and on local rules, not on the label in the contract. Check the rules where they live, or use a platform with compliance support.

Keep going

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ExpenseBiz is an independent editorial publication. We may earn a commission if you sign up through some links on this page, at no extra cost to you. This page is general information, not financial, tax or legal advice. See our methodology.

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