Accounting tools that earn their place
Purpose-built software for accounting firms. Each tool does one thing exceptionally well.
Why Cairn
Software that understands how firms actually work
Purpose-built for accounting firms
Not generic project management repackaged. Every feature exists because an accounting firm needed it.
Only pay for what your firm needs
Every tool works on its own and is priced individually. Start with one, add more when you're ready — no bundles, no commitments to features you won't use. They work independently, and even better together.
Your data gets its own database
Every firm's financial data lives in its own dedicated database — completely separate from every other firm's. Your data can be independently backed up, restored, and exported. No accidental crossover. No exceptions.
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Cairn Statements
Upload bank statement PDFs. Cairn extracts every transaction, learns your firm's categorization patterns, and syncs directly to QuickBooks — Online or Desktop.
- AI reads every transaction — dates, amounts, descriptions, balances
- Pattern learning — three approvals locks a categorization pattern
- Syncs directly to both QuickBooks Online and QuickBooks Desktop
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Cairn Books
Know where the books stand for every client. See every bank account, every month at a glance. Tab in, update a status, tab out.
- Personal queue — your assigned clients sorted by priority
- Firm-wide admin dashboard sorted by urgency
- Per-account period tracking with task checklists
Tested on Real Work
Built on a real firm. Tested on real deadlines.
Every feature in Cairn is used on real client work — real bank statements, real tax returns, real deadlines — before it's offered to anyone else. The tools aren't theoretical. They're earning their place every day.
Build Your Stack
Every firm's cairn looks different
Each tool is a stone. Add what your firm needs — they work independently and better together through Cairn Stack.
Cairn Stack
Your firm's dashboard — manage your team, your tools, and your billing in one place.
- One login for every Cairn tool — no separate accounts to manage
- Launch any app from your dashboard in one click
- Add tools as you grow — one invoice, transparent pricing, no surprises
Cairn Statements
AI-powered bank statement processing and QuickBooks sync for accounting firms.
- AI reads every transaction — dates, amounts, descriptions, balances
- Pattern learning — three approvals locks a categorization pattern
- Syncs directly to both QuickBooks Online and QuickBooks Desktop
Cairn Books
A status board for your firm's monthly reconciliation workflow.
- Personal queue — your assigned clients sorted by priority
- Firm-wide admin dashboard sorted by urgency
- Per-account period tracking with task checklists
Cairn Returns
Personal and business tax return management for accounting firms.
- Find any client, household, or entity in seconds
- Personal: households, individuals, 1040 document checklists
- Business: entities, stakeholders, jurisdictions, shareholder basis
Cairn Toolbox
Accounting calculators and quick-reference tools.
- Seven calculator packs: Starter (free) plus six paid
- Tax estimators, deduction calculators, payroll utilities
- Loan amortization, Social Security, RMD calculators
Cairn Docs
Secure client document collection portal for accounting firms.
- Secure links — clients upload without creating an account or remembering a password
- Files upload directly to encrypted cloud storage
- Reusable document request templates
Cairn Contacts
Client relationship and institutional knowledge base for accounting firms.
- Relationships that link both ways — spouse, partner, attorney, referral source
- Notes with timestamps and attribution — who learned it and when
- Cross-app integration — surfaces activity from Returns, Docs, and Books
Cairn Time
Lightweight time tracking purpose-built for accounting firms.
- Timer mode with multiple concurrent timers
- Manual entry with quick-entry favorites
- Configurable hourly rates and quarter-hour rounding
Cairn Guide
Searchable help center for the Cairn tools your firm uses.
- See only help articles for the apps your firm subscribes to
- Full-text search across all articles
- Article feedback for continuous improvement
Cairn Leaf
In DevelopmentPersonal note-taking for accounting professionals — daily pages, quick capture, ambient calm.
- One page per day — focused, unhurried, always ready
- Zero-friction capture that saves as you type
- Keyword-based tag suggestions that learn your vocabulary
In development
Learn moreCommon Questions
What firms ask us most
Do I have to buy the whole suite?
No. Every tool is standalone and priced individually. Start with one, add more when you're ready. Nothing requires any other tool to work.
How is my firm's data protected?
Every firm gets its own dedicated database — completely separate from every other firm's data. Your data can be independently backed up, exported, or deleted at any time.
Does it work with QuickBooks Desktop?
Yes. Cairn Statements syncs with both QuickBooks Online and QuickBooks Desktop via Web Connector.
Is there a long-term contract?
No. Subscriptions are month-to-month. You can add or remove tools at any time.
Is there a user limit?
Standard per-firm pricing covers up to 15 active users. Firms with more than 15 users, contact us and we'll sort out pricing together.
Who built this?
Cairn was built by someone who worked in a real accounting firm and saw the problems firsthand. Every feature is tested on real client work before it ships.
Ready to build your stack?
We're onboarding firms individually to ensure every experience is exceptional. Leave your info and we'll reach out.
Each tool is priced individually. No bundles. No long-term contracts.