Your Tax Agent Made a Mistake. Who Is Liable in Sri Lanka?
Your Tax Agent Made a Mistake. Who Is Liable in Sri Lanka?
There's a comfortable assumption behind hiring a tax agent. You pay a professional, they take the work off your desk, and they take the risk with it. The first two are true. The third is not, and the Inland Revenue Act is unusually direct about why.
This is part two of a pair. Part one covered who can legally act as your tax agent and how to authorise them properly. This one covers what happens when they get it wrong.
Three different things can land on you after an error, and the Act allocates each of them differently. Mixing them up is where most of the confusion lives.
If my tax agent makes a mistake, who is liable in Sri Lanka?
You are, for the tax. That much the Act settles in one sentence.
Section 131 reads:
"A tax return that is purported to be filed by or on behalf of a taxpayer shall be treated as having been filed by the taxpayer or with the taxpayer's authority unless the contrary is proved."
"On behalf of" is the operative phrase. A return your accountant filed is treated as your return. The assessment is raised on you. The tax is collected from you.
Section 126(3) removes the other obvious escape route:
"An Assistant Commissioner shall not be bound by a tax return or information provided by, or on behalf of, a taxpayer and the Assistant Commissioner may determine a taxpayer's tax liability based on any sources of information available to the Assistant Commissioner."
So the Department isn't limited to arguing with the numbers your agent put in. It can build your liability from whatever information it has to hand.
Both section 131 and section 128 carry the words "unless the contrary is proved", which makes these presumptions rebuttable rather than absolute. The Act does not say what proving the contrary requires, and it does not describe a procedure for it. What it does say, in section 141, is that the burden of proof sits on "the taxpayer or person making an objection to an assessment to show that the assessment is incorrect". So the door exists, and you're the one who has to push it open.
Does the tax bill ever move to my agent?
No. There's no provision in the Act that transfers a taxpayer's tax liability to an authorised representative, a tax agent, or a paid preparer.
What the Act does instead is spread the knowledge around without moving the bill. Section 128 does both jobs in one sentence:
"Every return, statement, or form purporting to be furnished under this Act by or on behalf of any person shall be deemed to have been furnished by that person or with the person's authority, as the case may be, unless the contrary is proved, and any person signing such return, statement, or form shall deemed to be cognisant of all matters contained therein."
Read the second limb carefully, because it's the one people misread in their own favour. Whoever signs is deemed to know everything in the return. If your agent signs, your agent is deemed cognisant of every figure. That's a real consequence for them, and it isn't a shelter for you, because the first limb has already deemed the return furnished with your authority.
This is also why the signing rules matter. Section 126(4) says "A taxpayer or the taxpayer's duly authorised agent, shall sign the return, attesting to its accuracy and completeness." And section 126(5) adds that "Where a return or part of a return was prepared for reward by some other person, including by an approved accountant, other than a full-time employee of the taxpayer, that other person shall also sign the return." A paid preparer signs too, attesting alongside you.
Is "my accountant handled it" a defence against a penalty?
The honest answer is more interesting than the myth, and it needs the Act's exact words rather than a summary.
Section 180 is the underpayment penalty:
"Where tax is underpaid, as a result of an incorrect statement or a material omission in a taxpayer's tax return, and that statement or omission is a result of intentional conduct or negligence on the part of the taxpayer, the taxpayer shall be liable to a penalty..."
Note what the trigger requires: intentional conduct or negligence on the part of the taxpayer.
But be careful about what follows from it. The Act doesn't define whether, or when, an agent's negligence is treated as the taxpayer's for the purposes of section 180, and it contains no general provision attributing an agent's conduct, omissions, or knowledge to the taxpayer. On that specific question the statute is silent, and silence isn't a defence you can lean on. Anyone telling you that "my accountant was careless, not me" is a settled answer to a section 180 penalty is reading something into the Act that isn't written there.
What the Act does do, in one place, is name conduct "by, or on behalf of, the taxpayer" in so many words. That's section 135(2)(a), and its effect is covered further down. The drafter clearly knew how to reach an agent's conduct where it wanted to.
There is one protection here that is written down, and it's genuinely useful. Section 176(4) says: "The burden of proof shall be on the Commissioner General to show non-compliance with the provisions of this Act with respect to the imposition of a penalty." That's the mirror image of section 141. For the tax, you have to prove the assessment is wrong. For the penalty, the Department has to prove the non-compliance. The IRD's own draft guide describes that proof as being on the balance of probability, which is the guide's characterisation rather than the Act's wording.
The other penalty worth knowing is section 181, for a statement to a tax official that's false or misleading in a material particular, which section 181(4) confirms includes a statement made in a return. It carries its own carve-out at section 181(3):
"No penalty shall be imposed under this section if the person who made the statement did not know and could not reasonably be expected to know that the statement was false or misleading in a material particular."
Read the scope words. The carve-out attaches to "the person who made the statement". Where your agent prepared and signed the return, the maker of the statement may well be your agent, which means this provision may be protecting them rather than you. It isn't a general reliance-on-your-adviser defence, and it isn't drafted as one. Section 181(6) also disapplies section 181 completely where the conduct is already subject to a section 180 penalty.
Which penalties can actually land on me?
These are the civil penalties most likely to follow a return that was prepared badly.
| Section | What triggers it | Amount |
|---|---|---|
| 178(1) | Failing to file a return by the due date | The greater of (a) 5% of the tax owing plus a further 1% of the tax owing for each month or part month the failure continues, and (b) Rs. 50,000 plus a further Rs. 10,000 for each month or part month it continues |
| 179(2) | Failing to pay all or part of an instalment within fourteen days of its due date | 10% of the amount of tax due but not paid |
| 180 | Tax underpaid through an incorrect statement or material omission resulting from intentional conduct or negligence on the part of the taxpayer | 25% of the underpayment, or 75% where the underpayment is higher than Rs. 10,000,000 or higher than 25% of the person's tax liability for the period |
| 181 | A statement to a tax official that is false or misleading in a material particular | The greater of Rs. 50,000 and the amount by which tax payable would have been reduced, or a refund increased |
Here's how section 180 works on real numbers. Say your correct tax liability for the year is Rs. 1,000,000, and a source of income your agent left out means you underpaid by Rs. 600,000. That underpayment is below Rs. 10,000,000, so the first limb doesn't bite. But it's more than 25% of your tax liability for the period, which is Rs. 250,000. So the 75% rate applies, and the penalty is Rs. 450,000 on top of the Rs. 600,000 of tax you still owe.
Change one number and the picture changes completely. On the same Rs. 1,000,000 liability, an underpayment of Rs. 120,000 clears neither threshold, so the rate is 25% and the penalty is Rs. 30,000.
Penalties don't replace each other. Section 176(3) says a person's liability for a penalty under one section of the penalties chapter "is separate and distinct from the person's liability, if any, for a penalty under another section of this Act or any other law and is in addition to interest levied under Chapter XV and to a criminal sanction imposed under Chapter XVIII". A late return that also understated income can attract more than one penalty, plus interest, plus a prosecution, and they run alongside each other rather than instead of each other. For how the 2026 amendments reshaped this area, see our guide to the current Sri Lankan tax penalties.
Does my tax agent carry any liability of their own?
Yes, but it's narrower than most people picture, and it points at the state rather than at you.
Section 190A, inserted by the Inland Revenue (Amendment) Act, No. 10 of 2021, reads:
"Any person who fraudulently (a) Prepares any document of information: or (b) Certifies a document, to be furnished to the Commissioner General of Inland Revenue, commits an offence under this Act, and on conviction after summary trial before a Magistrate, be liable to a fine not exceeding One Million Rupees or to imprisonment of either description for a term not exceeding six month."
Three things to take from that. It applies to "any person", which plainly reaches a paid preparer. It requires fraud, so ordinary error and negligence sit outside it. And it's a criminal fine paid to the state, so it produces no money for you and reduces your assessment by nothing.
Sitting alongside it is section 189, on wilfully evading the assessment, payment, or collection of tax, or wilfully and fraudulently claiming a refund you aren't entitled to. It carries a fine not exceeding ten million rupees, or imprisonment not exceeding two years, or both. Like section 190A it's framed as applying to "a person" rather than to the taxpayer alone.
There's a tempting misreading to avoid here. Section 146 makes a "representative" responsible for a taxpayer's duties, and section 146(11) adds that nothing in that section relieves a person of their duties despite a failure by their representative. But section 146(1) uses "representative" as a defined term, and the only limb that touches an individual is the guardian or manager of "an individual under a legal disability". The rest cover company directors, partners, trustees, and the officers of bodies and governments. A competent individual who hires an accountant has no section 146 representative at all, so that section never attaches to a tax agent you appointed yourself. Part one of this series works through who your agent actually is in the Act's terms.
Can I recover a tax penalty from the agent who caused it?
The Inland Revenue Act doesn't answer this question, and it's better to know that plainly than to assume either way.
The Act creates no right for a taxpayer to recover tax, penalties, or compensation from an authorised representative or paid preparer, and no mechanism to shift your liability onto them. It's a statute about the relationship between you and the Department. The relationship between you and the person you hired sits outside it.
Any claim against an agent would be an ordinary civil matter under Sri Lanka's general law, decided on principles that live in case law rather than in the tax statute. That's outside what this article can tell you, and outside what the Act can. If you're weighing one up, take proper legal advice rather than reasoning from the Inland Revenue Act.
What the Act does give you are routes to fix the tax position itself, and those are worth taking first because they're time-limited. If the error is yours to correct, you can apply to amend a filed return under section 136 within twelve months. If it's an assessment you disagree with, the administrative review route runs on a 30-day clock and the tax stays payable while you argue.
How long am I exposed if my agent got something wrong?
This is the part that surprises people, and it's the one place where the Act reaches an agent's conduct in so many words.
Section 135(2) sets the window for amending an assessment:
"(a) in the case of fraud, or gross or wilful neglect by, or on behalf of, the taxpayer, at any time; or (b) in any other case, within thirty months of: (i) for a self-assessment, the date that the self-assessment taxpayer filed the self-assessment return to which the self-assessment relates..."
So the ordinary position is thirty months from filing. After that, an ordinary error is closed.
Now read paragraph (a) again. Fraud, or gross or wilful neglect, by, or on behalf of, the taxpayer. Neglect on your behalf is neglect by the person acting for you. Where it reaches the standard of gross or wilful neglect, the thirty-month limit falls away and the assessment can be amended at any time, with no outer limit set in that paragraph.
That's the practical sting of using an agent. Not that their mistake becomes their bill, but that a serious enough failure on their part can keep your file open long after you assumed it had closed.
What should I check before I approve my return?
The review you do before signing is doing more work than it looks like. A short, targeted pass is enough for most individual returns.
- Income by source. Confirm every source is present, not just that the total looks familiar. Omissions are what section 180 is built around, and an entire missing source is the classic one.
- The figures you can independently verify. Bank interest, dividend statements, APIT and WHT credits, and anything with a certificate behind it. These either match the paperwork or they don't.
- Reliefs and deductions claimed. Check that you actually qualify for each one, not just that the number adds up. A relief you weren't entitled to is an incorrect statement.
- The year of assessment. Confirm the return is for the year you think it is, and that income has landed in the right one.
- Who signed it, and what they signed. Under section 126(5) a paid preparer signs too, and under section 128 whoever signs is deemed cognisant of everything in it.
This pass is far easier when your agent started from a complete document package rather than a folder of screenshots, because the figures then trace back to something you can check.
Handing your filing to a professional is reasonable, and nothing here argues against it. But be clear-eyed about what you're handing over. You're delegating the work, not the exposure. Section 131 keeps the return yours. Section 141 makes the assessment yours to disprove. And section 135(2)(a) means a serious enough lapse by someone acting on your behalf can keep the whole year open long after you thought it was settled.
Read it before you approve it. That's the part that stays yours no matter who you hire.
Frequently asked questions
Quick answers to common questions on this topic.
Who has to prove I was negligent, me or the IRD?
It splits. Section 141 puts the burden on you to show an assessment is incorrect, so the tax is yours to disprove. Section 176(4) reverses that for penalties, placing the burden on the Commissioner-General to show non-compliance. The IRD's own draft guide describes that proof as being on the balance of probability.
What is the penalty for understating tax in Sri Lanka?
Section 180 sets it at 25% of the underpayment, rising to 75% where the underpayment is higher than ten million rupees or higher than 25% of the person's tax liability for the period. It applies where the incorrect statement or material omission results from intentional conduct or negligence on the part of the taxpayer.
What does my agent's signature on my return actually mean?
Section 128 says any person signing a return is deemed to be cognisant of all matters contained in it. So if your agent signs, your agent is deemed to know every figure. That does not move the assessment, because section 131 still treats the return as filed by you or with your authority.
Can I sue my tax agent for a tax penalty in Sri Lanka?
The Inland Revenue Act does not answer this. It creates no right to recover tax, penalties or compensation from an agent, and no mechanism to shift your liability onto them. Any claim against an agent would be an ordinary civil matter under general law rather than something the tax statute provides, so take legal advice on it separately.
Is there any defence against a false statement penalty?
Section 181(3) says no penalty applies where the person who made the statement did not know and could not reasonably be expected to know it was false or misleading in a material particular. Note that the wording attaches to whoever made the statement. Section 181(6) also disapplies section 181 entirely where the conduct is already penalised under section 180.
How long can the IRD reopen my tax assessment?
Section 135(2) allows an Assistant Commissioner thirty months from the date you filed a self-assessment return. That limit disappears in one case. Where there is fraud, or gross or wilful neglect by, or on behalf of, the taxpayer, the assessment can be amended at any time, with no outer limit set in that paragraph.
Can my tax agent go to jail for a mistake on my return?
Not for a mistake. Section 190A requires fraud, applying to any person who fraudulently prepares a document or information, or certifies a document, to be furnished to the Commissioner-General. On conviction the fine is up to one million rupees, or imprisonment up to six months. Ordinary error and negligence fall outside it.
Do tax penalties stack on top of each other?
Yes. Section 176(3) states that liability for a penalty under one section of the penalties chapter is separate and distinct from liability under another section of the Act or any other law, and is in addition to interest levied under Chapter XV and to a criminal sanction imposed under Chapter XVIII.
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