The email no founder wants in March: "we're resigning as your auditor"
It usually arrives at the worst time — a few weeks before a filing deadline, or right in the middle of a fundraise when the investor's lawyers are asking for audited accounts. Your statutory auditor is stepping down, and suddenly you are staring at a compliance gap you did not know existed. Here is the thing most founders never learn until it happens: a company's auditor is appointed for a five-year term, and you cannot simply swap one out because you have found someone cheaper or you would rather use a friend's firm. Changing your auditor — whether they resign, you want to remove them, or you simply do not want to re-appoint them — is a governed process with its own forms, its own deadlines, and in one case the personal approval of the Central Government. Getting it wrong leaves your company without a valid auditor, which stalls your annual accounts and everything downstream of them. This is the map of every way an auditor leaves and exactly what you have to file each time.
Why you can't just change your auditor on a whim
The starting point is that a statutory auditor is not appointed year to year. Under Section 139(1) of the Companies Act, 2013, a company appoints its auditor at an annual general meeting to hold office from the conclusion of that AGM until the conclusion of its sixth AGM — a five-year term. The company reports that appointment to the Registrar in Form ADT-1 within 15 days of the meeting. A point worth clearing up, because a lot of older guidance still gets it wrong: there used to be a requirement to ratify the auditor's appointment at every AGM, but that proviso was omitted by the Companies (Amendment) Act, 2017 (notified with effect from 7 May 2018). So for AGMs held since then, you do not re-approve the auditor annually — the five-year appointment simply runs. This is exactly why an auditor is protected from being pushed out casually: the law deliberately fixed the term so that management and shareholders cannot lean on the auditor by threatening a yearly re-vote. Which means every route out of that term has a defined procedure. There are four.
Route one: the auditor resigns (Form ADT-3, 30 days)
When an auditor chooses to step down before the term is over, the obligation to notify the Registrar falls on the auditor, not the company. Under Section 140(2), a resigning auditor must file a statement in Form ADT-3 within 30 days of resigning, with both the company and the Registrar of Companies, indicating the reasons and any other relevant facts behind the resignation. The auditor needs a valid digital signature to file it on the MCA portal. The teeth are real: if the auditor fails to file ADT-3 in time, Section 140(3) imposes a penalty of ₹50,000 or an amount equal to the auditor's remuneration, whichever is less, plus ₹500 for each day the default continues, up to a maximum of ₹5 lakh. For the company, a resignation is not the end of the task — it has created a casual vacancy, and that has to be filled, which is route two.
Route two: filling the gap left behind (casual vacancy, Section 139(8))
A "casual vacancy" is simply the seat an auditor leaves empty mid-term — most commonly through resignation, sometimes through death or disqualification. Section 139(8) says the vacancy is filled by the Board of Directors within 30 days. But the crucial nuance is what happens when the vacancy arose from a resignation: in that case the Board's appointment is only provisional, and it must also be approved by the members at a general meeting convened within three months of the Board's recommendation. The auditor appointed to fill the vacancy holds office only until the conclusion of the next AGM — not for a fresh five-year term. So a resignation typically means a board meeting to appoint a replacement, a general meeting (often an EGM) within three months to approve it, and an ADT-1 filed for the new auditor. Where the vacancy is caused by death or disqualification rather than resignation, the Board fills it within 30 days and the general-meeting approval step does not apply in the same way. Either way, the company should not sit on a vacant auditor's seat.
Route three: removing an auditor before the term ends (the hard one — Section 140(1))
This is the route founders most often misunderstand, because it is deliberately made difficult. If the company wants to remove its auditor before the five-year term expires, Section 140(1) requires two things together: a special resolution of the members and the previous approval of the Central Government (a power delegated to the Regional Director). The sequence matters. The Board first passes a resolution proposing the removal; the company then applies to the Central Government in Form ADT-2 within 30 days of that board resolution; only after the government's approval is received does the company hold the general meeting and pass the special resolution — which must be done within 60 days of receiving the approval. And before any of this concludes, the auditor must be given a reasonable opportunity of being heard. This is a genuine hurdle, not a formality — the government scrutinises why an auditor is being ejected mid-term, precisely to stop companies from firing an auditor who is asking uncomfortable questions. If your reason for changing auditors can wait until the term ends, route four is far simpler.
Route four: simply not re-appointing them at the AGM (Section 140(4))
When the five-year term is up, you are not obliged to re-appoint the same auditor — but even here there is a safeguard if you want to bring in someone else in their place. Under Section 140(4), where it is proposed to appoint an auditor other than the retiring one (or to expressly provide that the retiring auditor will not be re-appointed), special notice of that resolution is required for the AGM. The retiring auditor has the right to receive that notice and to make a written representation to the members, which the company must circulate. This is the clean, low-friction way to change auditors: let the term run to its natural end and appoint a new firm at the AGM with the required special notice, rather than trying to force a mid-term removal. For most companies that simply want a different auditor, timing the change to the end of the term avoids the Central Government route entirely.
Where this sits in your company's compliance
Changing an auditor is one node in the wider governance system a private company runs on. It starts with the first auditor appointment and ADT-1 right after incorporation; the subsequent appointment and any change happen at, or are approved by, the board meetings and AGM that also record the resolutions; a mid-term removal special resolution feeds into your MGT-14 filing discipline alongside the other special-resolution matters; and the whole point of having a valid auditor in place is to sign off the accounts behind your AOC-4 and MGT-7 annual filings. All of it lives on the same clock as the rest of your Private Limited compliance calendar. Miss the auditor step and the annual filings behind it stall, so a resignation or removal is never a standalone event — it ripples through the year's compliance.
How we handle it at RDA, Baner
At RDA Advisory, Baner, we manage auditor changes end to end so your company is never left without a valid auditor. When an auditor resigns we make sure the ADT-3 is on record, convene the board meeting and the general meeting within the three-month window to fill the casual vacancy, and file the ADT-1 for the incoming auditor. Where a genuine mid-term removal is warranted, we run the Section 140(1) process properly — the board resolution, the Form ADT-2 application to the Regional Director, the auditor's right to be heard, and the special resolution once approval comes through — so it stands up to scrutiny. And where you simply want a different firm at the end of the term, we handle the Section 140(4) special notice and the clean AGM appointment. Throughout, we keep the resolutions, minutes and MGT-14 filings in order so the change never disturbs your annual accounts. Office No. 102, Snehraj Apartment, Baner, Pune 411045 · call +91 77570 45059.
Auditor stepping down, or want to change firms? Let's keep the seat filled and the filings clean
Got a resignation letter, or want to move to a new auditor without tripping the Companies Act? RDA handles the whole change — the ADT-3, the casual-vacancy board and general meetings, the ADT-1 for the new auditor, or the full Section 140(1) removal route with the Central Government application where it is genuinely needed — so your company always has a valid auditor and your annual filings stay on track. Book a consult at rdatax.in or call +91 77570 45059, or see our ROC & secretarial compliance service. RDA Advisory, Baner, Pune.
Verification note: The appointment and change of a company's statutory auditor is governed by Sections 139 and 140 of the Companies Act, 2013. Under Section 139(1) an auditor is appointed at an annual general meeting for a term up to the conclusion of the sixth AGM, reported to the Registrar in Form ADT-1 within 15 days; the earlier requirement to ratify the appointment at every AGM (the first proviso to Section 139(1)) was omitted by the Companies (Amendment) Act, 2017 with effect from 7 May 2018 and is no longer required. Under Section 140(2), a resigning auditor must file Form ADT-3 with the company and the Registrar within 30 days of resignation stating the reasons, with a penalty under Section 140(3) of ₹50,000 or the auditor's remuneration, whichever is less, plus ₹500 per day of continuing default up to ₹5 lakh. A casual vacancy is filled by the Board within 30 days under Section 139(8), and where it arises from resignation the appointment must also be approved by the members at a general meeting held within three months of the Board's recommendation, the auditor holding office until the conclusion of the next AGM. Removal of an auditor before the expiry of the term under Section 140(1) requires a special resolution and the previous approval of the Central Government (application in Form ADT-2 within 30 days of the Board resolution, special resolution within 60 days of approval) and a reasonable opportunity for the auditor to be heard. Section 140(4) requires special notice for a resolution appointing an auditor other than the retiring auditor or providing that the retiring auditor will not be re-appointed, with the retiring auditor's right of representation. Forms, timelines, thresholds and delegated authorities are set by statute and rules and are periodically revised, so confirm the current requirements with your CA or company secretary before acting. This is general information, not legal or professional advice.
