Sri Lanka Tax Consultant AI Agent
Prepare, check and file your 2025/2026 income tax return with Claude, in Sinhala, English or Tamil.
- You get
- The agent, the IRD forms and your answers
- Works in
- Claude desktop app, Mac or Windows
- Returns due
- 30 November 2026
From your T-10 to the Submit button
In Sinhala, English or Tamil. You pick at the start and it stays in your language.
Reads your documents
Upload your T-10, bank AIT certificates, FD slips and vehicle papers. It reads them and lists anything missing.
Works out your tax
A full computation, from assessable income to your refund or balance payable, with the working shown for every figure.
Answers any tax question
APIT, AIT on interest, rent, freelance and foreign income, gratuity, selling land or a vehicle, penalties and more.
Prepares what's missing
Writes the request letter or email to your employer or bank, and walks you through getting a TIN and IRD PIN.
Fills the official IRD forms
Your Return of Income, Schedules and Statement of Assets and Liabilities, plus a Tax Computation sheet for your records.
Files on RAMIS with you
On Claude Pro or above it fills the e-filing portal page by page while you watch. On the free plan, our team can submit it with you for Rs. 5,000.
The numbers that matter this year
Rates for resident individuals, from the IRD Guide for Y/A 2025/2026.
- Personal relief, before any tax
- Rs. 1.8M
- On the first Rs. 1M of taxable income
- 6%
- AIT on bank interest, a credit you can claim
- 10%
- Return deadline
- 30 Nov
Income tax bands
| Income | Rate |
|---|---|
| Personal relief, first Rs. 1,800,000 | 0% |
| First Rs. 1,000,000 of taxable income | 6% |
| Next Rs. 500,000 | 18% |
| Next Rs. 500,000 | 24% |
| Next Rs. 500,000 | 30% |
| Balance | 36% |
How it shows its working
Made-up figures| Cage | Item | Rs. |
|---|---|---|
| 10 | Employment income (T-10) | 2,600,000 |
| 30 | Interest, gross: net 270,000 + AIT 30,000 | 300,000 |
| 50 | Assessable income | 2,900,000 |
| 80 | Personal relief | 1,800,000 |
| 120 | Taxable income | 1,100,000 |
| 150 | Tax: 6% on 1,000,000 + 18% on 100,000 | 78,000 |
| 180 | Tax credits: APIT 45,000 + AIT 30,000 | 75,000 |
| 190 | Balance tax payable | 3,000 |
Everything in one file
Answer a few questions here, and you get one PDF. Your answers come right after the cover, then everything that turns Claude into your tax consultant, then the official IRD forms for 2025/2026. The agent reads your answers and starts filling the forms straight away.
Answer a few questions, then download one PDF with your answers in it. Free, no sign up.
AI INST
Sri Lanka Tax Consultant
aiinst.io/tax-agent
- Your answers, filled in0.00
- Setup guide for the Claude desktop app0.00
- Agent instructions for Claude0.00
- Tax knowledge base for 2025/20260.00
- Quick reference and key dates0.00
- Official IRD forms, ready to fill0.00
- Pages43 + yours
- Sign upNot needed
- Email addressNot needed
Total0.00
Version 1.0, Y/A 2025/2026
Keep your receipts. Your Tax Agent will ask for them.
Four steps to filled forms
About 15 minutes in all. The last two on your computer.
Answer the questions
Ten short sections on this site: your income, assets and reliefs. Leave anything you're unsure of blank.
Download your PDF
One file with the agent, the IRD forms and your answers. Save it on your Mac or Windows computer.
Set up a Project
In the Claude desktop app, open
Projects, create one calledTax Agent, add the PDF and paste the instruction below.Start a chat
Attach your T-10 and bank certificates if you have them, and type
Start my tax agent. It fills your IRD forms one by one, then lists anything missing or to check.
For step 3: paste this into the Project instructions
You are the AI INST Sri Lanka Tax Consultant Agent. In every chat in this project, follow the instructions in the AI INST Tax Agent PDF in the project files. When I type "Start my tax agent", begin with Part 3.3: if my answers are included, go straight to filling my forms.
Your setup
- A Mac or Windows laptop or desktop
- The Claude desktop app, from claude.ai/download
- A Claude account. Free works for everything except the agent filling the IRD portal, which needs Pro or above
- Optional: Google Chrome with the Claude in Chrome extension
- Your IRD PIN, which you type in yourself
Your documents
Tick what you have. The agent helps with the rest.
- Your TIN and the year you're filing for
- T-10 certificate from your employer
- Interest and AIT certificates from every bank
- Details of fixed deposits, rent, business income or anything you sold
- A list of your assets and liabilities: property, vehicles, loans, bank balances
You stay in control
It never types your PIN, password, captcha or ID numbers, and it never presses the final Submit button. You log in and you submit.
Your details stay yours
Your browser writes your answers into the PDF, and Claude reads your documents under your own account. AI INST never receives any of it.
A helper, not a tax practitioner
Check every figure before you submit. For business or foreign income, capital gains or a dispute, speak to a tax professional.
We build AI agents for businesses. This one is on us.
AI INST is an AI engineering company based in Sri Lanka. Every project we take on ends with a live system running for the client. This tax agent is a small example of the same idea: a real workflow handed to AI, with a person in control of the final decision.
“Excellent communication and real engineering depth. The WhatsApp agents they shipped follow up faster than any hire could.”
Dr. Upali RanasingheManaging Director, CR ExportsSome of our work
- Real estate, AustraliaA personal AI assistant connected to the company CRM, plus a diaspora business directory.
- Manufacturing, Sri LankaAn AI-powered CRM with multichannel customer communication for an established porcelain brand.
- HealthcareAn appointment app for a physiotherapy and orthopaedic clinic, and InstaCare AI for clinic management.
- Professional servicesPersonal AI assistant setups that run admin, finance tracking and daily planning for business owners.
- Social mediaAn AI agent that answers Facebook and Instagram comments and DMs for businesses.
- AI systems delivered
- 5+
- Businesses automated
- 10+
- Countries served
- 5+
- People trained on AI
- 50+
Registered in Sri Lanka, company number PV00368440.
Questions, answered
Returns are due 30 November 2026
Answer the questions now, set the agent up on your computer, and have your forms filled well before the deadline.
Answer a few questions, then download one PDF with your answers in it. Free, no sign up.
More free agents land on Instagram first
We share each one there with a short demo of it working. Follow along and tell us what you want next.
Follow @aiinst.ioon Instagram (opens in a new tab)