Never get a tax notice you didn't see coming.
Tell Karr what happened in plain words. It writes the entry, puts GST on every bill, and your accountant works in the same books.
Make it yours
Kept in this browser. Sent nowhere.
Where is your business?
Your next 90 days
- Monthly outward supplies return (GSTR-1), Sep 2026
- Monthly GST summary return (GSTR-3B), Sep 2026
- Quarterly TDS filing (TDS Return), Q2
- Monthly outward supplies return (GSTR-1), Oct 2026
- Monthly GST summary return (GSTR-3B), Oct 2026
- Monthly outward supplies return (GSTR-1), Nov 2026
- Monthly GST summary return (GSTR-3B), Nov 2026
- Annual GST return (GSTR-9)
These are the standard dates for a business like yours in India. Karr works out your exact dates once it knows your registrations.
Chapter 1
Tell Karr what happened
Say it in plain words. Karr writes the entry, checks it and files it in the right place.
- 1
Open Karr on your phone and the money is the first thing you see: in the bank, owed to you, owed by you.
- 2
A bill goes to the customer from your own WhatsApp, from the same screen.
- 3
And Karr tells you, on the phone, the moment something needs you.
Chapter 2
Selling and getting paid
Quotes, orders, invoices and the money that comes back.
- 1
You tell Karr who bought what. It writes the invoice and works out the GST on every line.
- 2
Saving it posts the sale: what the customer owes on one side, the sale and the GST on the other.
- 3
The same figure is in the books at once, and the trial balance still agrees to the paise.
- 4
The GST waits in the month's return, worked out from the invoices already in the books.
- 5
And it adds up into the year, so the annual return is already written when its date comes.
Chapter 3
Buying and paying
Bills in, payments out, and nothing paid twice.
Chapter 4
Bank and cash
Every payment in and out, matched to the bank.
Chapter 5
Tax, on time
Returns built from your books, deadlines watched for you.
- 1
Karr reads your books against the tax law every day and counts what could bring a notice.
- 2
Each risk carries the rupees at stake and the date it turns into a problem, with the fix beside it.
- 3
You fix it in the books, the flag clears, and the notice never comes.
- 1
Every bill carries your country's GST, at the right rate, worked out line by line.
- 2
Karr adds it up as you go, so you always know what you will owe.
- 3
And every date you must file by sits on one calendar, worked out for your business.
Chapter 6
Stock and making
What you hold, what you make, and what it cost.
Chapter 7
Your people
Salaries, leave and claims, and the papers that go with them.
Chapter 8
Your numbers
Reports you can trust, because every figure leads back to an entry.
Chapter 9
Year end and audit
Close the year, sign the statements, hand the auditor everything.
- 1
Close the year and the statements are drawn from the books, ready to read.
- 2
Karr walks the audit with you, one thing at a time, starting with who the auditor is.
- 3
Directors sign the statements by a link on their phones, with nothing to install.
- 4
Then the company's forms (AOC-4, MGT-7) are filled from the signed year, ready to file.
Chapter 10
Company law
Meetings, registers and the yearly forms of a company.
Chapter 11
Built for your trade
Restaurants, labs, trusts and online sellers get screens of their own.
Chapter 12
The agents
Named helpers who do the routine work, on your own AI key.
Chapter 13
Moving in and setting up
Bring your books in, tell Karr about your business once, and invite your team.
Everything, at a glance
Counted from the same list the app is checked against, so a new screen shows up here the day it ships.
- things Karr does for a business here
- 132things Karr does for a business here
- changes shipped in the last 90 days
- 264changes shipped in the last 90 days
- kinds of link a client opens with no login
- 23kinds of link a client opens with no login
- countries Karr keeps books for
- 30countries Karr keeps books for
New in Karr
New this month
Verified books
A robot accountant checks your books every night.
Karr runs a battery of double-entry invariants across your ledger nightly — the same checks a senior accountant would, automated. You wake up to a score and a plain-language report, and can hand a lender a signed certificate of self-verified books.
An automated consistency check — not a statutory audit.
Books verified last night
Score 100 / 100 — all checks passed
- ✓Every entry balances
- ✓Trial balance foots to zero
- ✓Balance sheet foots
- ✓Receivables tie to customers
- ✓Payables tie to vendors
- ✓Inventory ties to the GL
- ✓No orphan payment allocations
Simple, transparent pricing
No hidden fees. Cancel anytime. GST invoice included.
Free
For solo founders getting started
- GST-compliant invoicing & billing
- Double-entry accounting & ledgers
- Core reports (P&L, Balance Sheet, Trial Balance)
- Compliance calendar
- 1 business · up to 2 users
- Email support
Starter
For growing small businesses
- Everything in Free
- AI bookkeeping & assistant
- Estimates, credit & debit notes
- Recurring invoices & payment links
- Inventory management
- 1 business · up to 3 users
Pro
For established businesses & teams
- Everything in Starter
- Bank feeds & reconciliation
- Manufacturing, warehouse & projects
- Fixed assets, budgeting & approvals
- Multi-currency & custom report builder
- API access
- Up to 3 businesses · 10 users
Practice
For CA firms — pay only for the clients you bill
- Practice dashboard, CRM & filing boards — free
- Seats for your whole team — free
- Your first 5 clients free, forever
- From ₹149/client/month after that
- Earn 10% of every client who moves to their own plan
- Priority support
Common questions
Every new business gets 30 days of Karr free. Signing up asks for no card and no payment. After that, plans start at ₹499 a month.
No. You tell Karr what happened in plain words, one question at a time, and it writes the entry.
Only if you want it to. AI in Karr runs on your own key from Gemini, Claude or OpenAI, added once in Settings. Karr never runs AI on a key of its own.
Each business is kept apart in the database by row-level security, so no other business can read its books. Your data is encrypted at rest by our database host. Every change to invoices, journals and payroll is written to an audit trail that members can read and nobody can edit. We do not sell your data.
Yes. Karr prepares the GST return, the tax deducted at source (TDS), the income tax return and a company's yearly filings from your books, and files them with you.
Yes. Customers, items and opening balances come in from a spreadsheet, and a whole ledger can come in from Tally.
Yes. Invite your accountant with the role you choose, and they work in your books from their own login.
Sending email from your own address
Karr sends the paperwork your business already sends: invoices to customers, payment reminders when a bill goes overdue, and compliance notices to your accountant. Those should come from you, not from a software company's address — so Karr lets you connect your own mailbox and sends through it.
If you use Gmail or Google Workspace, you can connect it in one click. Karr asks Google for permission to send mail on your behalf, and for your email address and name so it can show you which mailbox is connected.
Karr cannot read your email. It cannot open, search, download, forward, change or delete a single message — the permission it holds only allows sending, and no other access is requested or possible. Your messages are never stored on Karr's servers.
You can disconnect at any time from Settings → Email, which deletes the stored credential immediately. Mail providers outside Google are supported through standard SMTP, so connecting Google is always optional. Full detail is in our Privacy Policy.