How we make this list: we compare pricing pages, product documentation and public user reviews. Rankite is independent; if a vendor ever pays for a featured spot, that listing is clearly labeled Partner.
Consultants sell hours and expertise, which makes their accounting unusual: revenue arrives as invoices against projects, expenses scatter across travel and software, and quarterly estimated taxes punish anyone who is not tracking profit in real time. The best accounting software for a small consulting business handles time-to-invoice cleanly, tracks project profitability and stays simple enough that the owner does the books in an hour a month.
These eight tools cover the real options, from pure accounting platforms to all-in-one studio tools. Prices run from free to $38 per month for entry plans, and the right choice depends on whether you bill hours, sell retainers or run projects with expenses.
| Tool | Best for | Starting price | Free plan |
|---|---|---|---|
 FreshBooks | Consultants who bill by the hour and want painless invoicing | $23/month (Lite plan; Plus $43, Premium $70) | No (30-day free trial) |
 QuickBooks Online | Consulting firms whose accountant already works in QuickBooks | $38/month (Simple Start; Essentials $85, Plus $140, Advanced $340) | No (30-day free trial) |
 Xero | Growing consultancies that want clean, modern accounting | $25/month (Early plan; Growing $55, Established $90) | No (30-day free trial) |
 Wave | Solo consultants who want real accounting for free | Free (Starter plan); $19/month (Pro; $16/month billed annually) | Yes (Starter) |
 Zoho Books | Consultants in the Zoho ecosystem or watching every dollar | $15/month (Standard plan, billed annually) | Yes (free plan with revenue threshold) |
 Bonsai | Freelance consultants who want contracts, time tracking and invoicing in one place | $21/month (Starter plan, billed annually; $25 month-to-month) | No (7-day free trial) |
 Moxie | Small consultancies that want projects, time and invoicing for one flat price | $10/month (Starter plan, billed annually; $12 month-to-month) | No (14-day free trial) |
 Sage | Consultants who want traditional, rigorous small-business accounting | $10/month (Accounting Start plan) | No (30-day free trial) |
We review this list regularly. Vendors can request a listing, send updated pricing or ask about featured placement.
Consulting revenue has a shape that generic small-business accounting misses. First, time must become invoices: if you bill hours, the tool should track time against clients and projects and convert it to invoices in one click. FreshBooks, Bonsai and Moxie do this natively; Xero, QuickBooks and Zoho Books do it through integrations or higher plans. Second, project profitability: fixed-fee engagements need cost tracking against the fee, so you know which clients make money. QuickBooks Plus, Xero and Sage handle this best.
Third, expenses. Consultants scatter spending across travel, software and subcontractors; receipt capture on mobile and automatic bank categorization save hours monthly. Fourth, taxes. Quarterly estimated payments mean you need a real-time profit picture, not a year-end surprise; any double-entry tool here provides it. Finally, consider multi-currency if you bill international clients: Xero and QuickBooks handle it well, while simpler tools may not. Match the tool to how you make money, not to a feature checklist.
This list splits into two philosophies. FreshBooks, QuickBooks, Xero, Wave, Zoho Books and Sage are accounting-first: the ledger is the core, and projects and time attach to it. Bonsai and Moxie are workflow-first: the engagement is the core, and money attaches to it. Neither is wrong; they serve different firm shapes.
Choose accounting-first if you have a CPA or bookkeeper, bill through complex arrangements, or plan to grow past 10 people. The ledger scales with the firm, and every accountant on earth reads Xero or QuickBooks. Choose workflow-first if you are a solo consultant or a micro-firm where the same person delivers the work and runs the business. Bonsai at $21 or Moxie at $10 per month replaces three subscriptions and, more importantly, removes the weekly admin session of reconciling separate systems.
The hybrid path is common: Moxie or Bonsai for daily workflow plus Wave (free) for the ledger. That combination costs $10 to $21 per month total and covers both sides. Whatever you choose, decide which system is the source of truth for money; two tools that both think they own invoicing is how consultants end up with duplicate invoices and missed revenue.
We started with the categories buyers search: accounting software for consulting business, accounting software for consultants and best accounting software for small service business. For each candidate we opened the vendor's own pricing page, checked prices against public reviews on G2 and Capterra and practitioner discussion on Reddit, and compared invoicing, time billing, expense tracking, project profitability and price. Where a price could not be verified on the vendor's page we wrote "See website" rather than guessing.
Wave's Starter plan is free and includes real double-entry accounting and invoicing. If you bill hours and want time-to-invoice in one tool, Moxie at $10 per month is the cheapest all-in-one. FreshBooks Lite at $23 per month is the cheapest mainstream hourly-billing option.
For most small consultancies, yes, at least for tax planning and year-end filing. The software handles daily books; the accountant handles entity structure, quarterly estimates, deductions and compliance. Expect the software to cut your accounting bill, not eliminate it.
Most small consultancies use cash accounting: simpler, and it matches how money actually moves. Accrual becomes relevant when you carry large receivables, defer revenue across long projects or need GAAP-compliant statements for lenders. All the accounting-first tools here support both; check with your CPA before switching.
Xero and QuickBooks Online handle multi-currency invoicing well. Zoho Books and Sage support it with some limitations. FreshBooks handles it on higher plans. Bonsai, Moxie and Wave are weaker here, so consultants billing in euros or pounds should prefer Xero or QuickBooks.
Track profit monthly in your accounting software and set aside 25 to 30 percent of net income in a separate account. Xero, QuickBooks and Sage all produce the profit reports you need. Many consultants have their CPA calculate the quarterly payment from these reports. The software does not file estimated taxes for you; calendar reminders do that job.
When the books get complex: multiple team members, subcontractors, retainers plus hourly billing, or a CPA who asks for a trial balance. Another trigger is hiring a bookkeeper, who will likely prefer Xero or QuickBooks. The move usually happens between $200K and $500K in annual revenue.
We review this list regularly. Vendors can request a listing, send updated pricing or ask about featured placement.
Shihab has spent more than a decade helping SaaS and e-commerce brands grow through search. He writes Rankite's software buying guides from pricing pages, documentation and public user reviews. More about Shihab.