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GST, income tax & accounting services in Kolkata

Your books, double-checked every month.

From Kolkata, we handle GST, TDS, PF/ESI, income tax returns and monthly accounts for businesses across India, and bookkeeping for businesses in the UK and US.

  • GST & e-invoicing
  • Income tax (ITR-1 to 6)
  • TDS / TCS
  • PF, ESI & P-Tax
  • Bookkeeping
  • UK & US bookkeeping, tax & audit

Your month, handled

Every filing planned around its due date

  • TDS depositedby 7th
  • GSTR-1 filedby 11th
  • PF & ESI paidby 15th
  • GSTR-3B filedby 20th
  • Books reconciledmonth end
Month closed
Services

Everything your books need, in one place

Hands-on compliance for businesses in India, and a reliable back office for businesses abroad.

For businesses in India

Traders, manufacturers, restaurants, retailers, professionals and service firms

  • GST returns & reconciliationGSTR-1, GSTR-3B, 2B matching and the GSTR-9 annual return
  • E-invoicing & e-way billsSet-up, checks and month-end matching
  • TDS & TCSMonthly deposits, quarterly returns, Form 16 and 16A
  • Income tax returns: ITR-1 to ITR-6Salaried individuals, professionals, proprietors, firms, LLPs and companies
  • PF, ESI & Professional TaxRegistrations, monthly challans and returns for your staff
  • Bookkeeping & monthly accountsBank reconciliation, ledgers and a monthly profit statement
  • Audit supportStatutory and tax audits with a partner Chartered Accountant

For businesses in the UK & US

Small and growing businesses that want clean books every month

  • Bookkeeping & bank reconciliationDaily or monthly transaction recording and bank matching
  • Payables & receivablesBills, invoices, ageing reports and follow-up lists
  • Month-end close supportAccruals, prepayments and reconciled balance sheets
  • Payroll processing supportPreparing payroll runs from your instructions
  • Management reportsMonthly P&L, cash flow and variance summaries
  • Tax filing, audit & assuranceThrough our partner CPAs in the US and qualified accountants and registered auditors in the UK

We keep your books clean and reconciled. Tax returns, audits and assurance work are signed off by licensed partner firms in your country, so you get one point of contact for everything.

Compliance calendar

The dates we work to

Missed deadlines mean late fees and interest. Every filing is planned around its due date, with your data collected well in advance.

Every month

7thTDS / TCS depositFor the previous month
11thGSTR-1Outward supplies
15thPF & ESIContributions and returns
20thGSTR-3BSummary return and tax payment

Quarterly and yearly

31JulTDS return, Q1April to June
31OctTDS return, Q2July to September
31JanTDS return, Q3October to December
31MayTDS return, Q4January to March
31JulITR filingIndividuals and non-audit cases
31OctITR, audit casesBusinesses requiring tax audit
31DecGSTR-9Annual GST return

Due dates as per current rules; extensions notified by the government are followed when announced.

How it works

Simple to start, steady every month

1

A quick review

Share your last three months of returns or books. You get a short list of mismatches and risks, at no charge.

2

One fixed monthly fee

A single price agreed in writing for the work you need. No surprise bills.

3

Closed on time

Every filing done before its due date, with a one-page summary of what was filed and paid.

Why Twinrule

Close attention, from a firm that answers the phone

One point of contactThe person who does your work is the person you speak to.
Reconciled, not just filedBooks, e-invoices and returns are matched before anything is submitted.
On your scheduleOffice visits by appointment, updates on WhatsApp and email.
Your data stays privateClient files are kept confidential and shared only with your permission.
We take full responsibility for our workIf a return we prepared is wrong or late because of our mistake, we correct it at our own cost and pay the late fee or interest it caused. No excuses, and no passing the blame.
FAQ

Questions, answered

How we work with businesses in India, and with businesses in the UK and US.

For businesses in India

Which businesses do you work with?

Traders, manufacturers, restaurants, retailers, professionals, service firms and startups anywhere in India: proprietorships, partnership firms, LLPs and private limited companies.

Do you file the returns, or only prepare them?

We prepare and file GST, TDS, PF/ESI, Professional Tax and income tax returns on the government portals. You see and approve the figures before anything is filed.

What do I need to send you each month?

Your sales and purchase invoices, bank statements and any salary details, ideally by the 5th. We send a checklist and a reminder, so nothing is missed.

Which accounting software do you use?

We work in Tally and Zoho Books. If you don't have a system yet, we set one up in whichever suits your business.

How much does it cost?

A fixed monthly fee, agreed in writing after a free review of your books. It depends on your transaction volume and the filings you need. No surprise bills.

Can you help with audits and notices?

Statutory and tax audits are done with our partner Chartered Accountant. We also help you gather records and prepare replies to GST and income tax notices.

I have missed filings. Can you fix that?

Yes. We start with a catch-up plan: pending returns are filed in order, with late fees and interest worked out before we begin.

What if you make a mistake?

We take full responsibility for our work. If a return we prepared is wrong or late because of our error, we correct it at our own cost and pay the late fee or interest it caused.

For businesses in the UK & US

What do you do for UK and US businesses?

Bookkeeping and bank reconciliation, payables and receivables, payroll preparation from your instructions, month-end close and monthly management reports.

Do you file taxes, VAT or do audits?

Tax returns, VAT or sales-tax filings, audits and assurance are handled by our partner CPAs in the US and qualified accountants and registered auditors in the UK. We keep your books ready for them, and you deal with one point of contact.

Which software do you work in?

Zoho Books and Xero. We work inside your own account, so your data stays with you.

How do you keep my data secure?

You add us as a user with an accountant login, so no passwords are shared. We are happy to sign an NDA, and files are shared only through your own systems or secure links.

What about the time difference?

We are in India (IST), which overlaps with the UK working day and US mornings. Most work happens overnight for US clients, so it is ready when you start your day. Calls are scheduled at a time that suits you.

How do you charge?

A fixed monthly fee in GBP or USD, based on your transaction volume, agreed after a free review of your books. Invoiced monthly, with no long lock-in.

How do we get started?

Share a recent month of bank statements and read-only access to your books. We send back a short review of what needs fixing and a fixed quote within a few working days.

What if you make a mistake?

We take full responsibility for our work. If something in your books is wrong because of our error, we correct it at our own cost and tell you exactly what happened and what we changed.

GSTR-9 is due on 31 December

Get a review of your GSTR-1, GSTR-3B and 2B for the year, so any mismatch is fixed before you file the annual return.

Ask for a GSTR-9 review
Contact

Talk to Aakash Deb

Message on WhatsApp for the quickest reply, or write by email.

WhatsApp / Phone+91 94325 75859Mon–Sat, 10 am – 8 pm
Emailhello@twinrule.comReplies within one working day
Based in

Kolkata, India

Serving businesses across India, the UK and the US

Get a free review of your books

Tell us about your business. We look at a recent bank statement and your filing history, tell you what needs fixing, and quote a fixed monthly fee. No obligation.

Prefer to talk? WhatsApp +91 94325 75859.

We reply within one working day.