Do You Need a Tax Agent in Sri Lanka, or File Yourself?

Most people asking this question have already decided the answer is yes, and they're asking mainly to confirm it. That's worth pushing back on. Plenty of Sri Lankan tax situations are genuinely simple enough to handle yourself, and paying someone a fee to re-type figures you already have is not a good trade.

Plenty of others are not simple, and trying to save the fee is how people end up with an assessment they can't argue with.

So this is a decision guide, not a pitch. It sets out what the law actually asks of you, which situations sit comfortably at the self-file end, which ones warrant a professional, and what you're really buying when you pay for one.

Do I need a tax agent to file my tax return in Sri Lanka?

No. The Inland Revenue Act does not require one, and it's worth being precise about how we know that, because the Act doesn't contain a sentence saying "you may file your own return." What it contains is a duty and a permission.

The duty is in Section 93(1): "every person shall file with the Commissioner General not later than eight months after the end of each year of assessment a return of income for the year." That obligation lands on you. It doesn't land on an accountant, and it doesn't move.

The permission is in Section 126(4): "A taxpayer or the taxpayer's duly authorised agent, shall sign the return, attesting to its accuracy and completeness."

If you do want someone to act for you, the Act's list of who qualifies is broader than most people expect and the authorisation has to be in writing. That's covered in detail in our guide on whether a tax agent can file your return for you.

Do I even have to file a return this year?

Before you weigh up agent versus self-file, check whether you're in the filing net at all. Section 94(1) removes the Section 93 obligation for several categories. These are the ones that matter most to a resident individual:

• A resident individual with no tax payable for the year
• A resident individual whose tax payable relates exclusively to employment income subject to withholding under Section 83 before April 1, 2019
• An individual whose tax payable relates exclusively to employment income where the employer deducted APIT under Section 83A, with nothing further payable under Section 82(2)(b) or (c)
• That same individual where interest income for the year does not exceed Rs. 5,000

That last one was added by the Inland Revenue (Amendment) Act, No. 11 of 2026. It means a small savings account balance no longer drags a salaried employee into filing.

One caution. Section 94(2) says that despite all of the above, the Commissioner-General may serve a written notice on a person requiring them to file. If that notice arrives, the exemption stops helping you.

If you're not exempt and you've never filed before, start with our walkthrough on registering and filing your first return.

When is filing my own return genuinely straightforward?

Two situations sit comfortably at the self-file end.

One employment, APIT already deducted. Your employer has done the withholding through the year. If you're not exempt outright under Section 94, your return is largely a transcription exercise: the figures are on the certificates your employer gives you.

Freelance or business income from one or two clients, in rupees. You have one income stream, one set of expense records, and no foreign currency. The arithmetic is a bracket walk.

Here's what that second case actually looks like. Say you're a consultant with Rs. 3,600,000 of business income for the year after deducting your allowable expenses.

The personal relief of Rs. 1,800,000 applies for each year of assessment commencing on or after April 1, 2025, under paragraph 2(a)(v) of the Fifth Schedule. The rate step comes from the First Schedule: taxable income above Rs. 1,500,000 but not above Rs. 2,000,000 is Rs. 150,000 plus 24% of the excess over Rs. 1,500,000.

That's the whole computation. If your year looks like that, an agent is charging you to do arithmetic you can do yourself. Our full walkthrough of the calculation covers every slab.

What does self-filing actually ask of me?

This is the part people underestimate. It isn't the tax that's hard, it's the record discipline and the calendar.

The return wants income broken out by source. Section 93(2)(a) asks for your assessable income from each employment, business, investment and other income and the source of that income, your taxable income and the tax on it, the tax you already paid by withholding or instalment, and the balance remaining. Your withholding certificates have to be attached to it as well. If your records are one bank account and a memory, assembling that in November is painful.

Records have to last five years, minimum. Section 120(6) requires you to retain records for five years from the date the transaction took place, or longer if the assessment window for that year is still open and any related proceedings are unfinished. Section 120(1) applies that to anyone "required under this Act to make a return", so this isn't a business-only duty. Section 120(10) defines source documents broadly, and the list runs to sales and purchase invoices, costing documents, bookings, diaries, purchase orders, delivery notes, bank statements, contracts, and any other documents relating to an element of a transaction.

You pay through the year, not at the end. If you have business, investment or other income, or employment where the employer doesn't withhold, Section 90 makes you an instalment payer. Instalments fall due on August 15, November 15 and February 15 in the year of assessment, and May 15 in the next one.

And the money is due before the paperwork. Section 82(2)(c)(ii) makes the balance of tax on assessment payable six months after the year of assessment ends, so September 30, while the return itself isn't due until November 30. We wrote about that two-month gap and why it trips people up.

When should I hire a tax agent instead?

Four situations shift the balance.

Several income sources at once. Section 21 sets a different accounting basis per source. Subsection (2) puts an individual on the cash basis for employment and investment income. Subsection (3) puts business income on the accrual basis. Run a salary, a rental, some interest and a side consultancy in the same year and you're applying two different timing rules inside one return.

Foreign income. The difficulty here is mostly timing, and it's the same Section 21 split. Foreign employment income is cash basis, so it turns on when you were paid. Foreign business income is accrual basis, so it turns on when you earned it, not when the money landed. Section 120(9) also requires your figures to be stated in Sri Lankan currency. Get the conversion date wrong across a year of invoices and every downstream number moves. Our guide on which exchange rate applies to foreign income goes into this.

A capital gain during the year. This one is the sharpest change of gear, because a gain on realising an investment asset runs on a completely separate track from the rest of your tax year.

An assessment already in dispute. Once the IRD has assessed you and you're objecting or appealing, you're no longer doing bookkeeping, you're arguing a position with deadlines and evidentiary burdens attached. That is worth professional help almost regardless of how simple the underlying figures are.

What does a tax agent cost in Sri Lanka?

The Inland Revenue Act sets no fee, and there's no statutory scale. Anyone quoting you a standard price is quoting a market rate, not a legal one, so treat published ranges with caution and get a quote for your own situation.

What actually drives the number is worth knowing, because most of it is inside your control:

Notice that the second row is the one you can move most. The same return costs very differently depending on whether you arrive organised. Our checklist of what your agent actually needs is a good way to find out where you stand before you ask for a quote.

There's also a real thing you're buying, and it's written into the Act. Under Section 126(5), where a return or part of it was prepared for payment by another person, including an approved accountant, that person must certify separately. The certification specifies how far they were involved, which documents they examined, and what information they relied on. It's submitted with the return and treated as part of it. A paid preparer leaves a signed footprint on your file.

Does hiring an agent move the risk off me?

No, and this is the single most common misunderstanding about the arrangement.

Section 126(3) says an Assistant Commissioner is not bound by a return or information provided by, or on behalf of, a taxpayer, and may determine your liability from any source of information available. Section 128 treats a return furnished with your authority as furnished by you unless the contrary is proved, and deems anyone signing it to be aware of everything in it.

Put plainly: the assessment still lands on you. Hiring a good agent buys you accuracy and time. It does not buy you a shield. We covered what happens when a tax agent gets it wrong in detail, including where the burden of proof sits.

Which means whichever route you take, you need to understand your own return well enough to read it before you approve it.

So how do I decide?

Place yourself on the scale rather than looking for a rule.

If you want to compare that against spreadsheets and consultants side by side, we've written a broader look at the options for managing Sri Lankan tax.

One last thing worth saying. The decision isn't permanent. Plenty of people use an agent for the year they sell a property or move abroad, then go back to filing themselves once the year is ordinary again. The duty under Section 93 is yours in both cases, so the only question each year is who does the work.