EaseValuePresumptive taxation under Section 58 of the Income-tax Act, 2025 — the provision that carried forward the old Sections 44AD, 44ADA and 44AE — offers a bargain. Declare a fixed percentage of your turnover as income, and you are excused from maintaining full books of account, from a tax audit on that ground, and from the four-instalment advance tax cycle. Declare less than that percentage and you are taxed on what you actually earned, but you must prove it, which means books, an accountant, and in most cases an audit under Section 63 (old Section 44AB). Almost every guide to this choice stops at the obvious rule — go presumptive if your real margin is above the deemed rate. That rule is wrong, and it is wrong in a direction that costs money, because keeping books is not free. Once you price the accountant and the audit, the true break-even margin sits below the deemed rate, sometimes well below. This calculator computes tax both ways, names the cheaper route in rupees, and then works out the exact actual margin at which the two meet, so you can see how much room you have before the answer changes. It also tells you which turnover limit applies to you — the base one or the higher one — and why, because that depends on your cash receipts rather than your turnover.
How it’s calculated
- Choose whether you run a business or a profession. The two have different deemed rates and completely different turnover limits, and the calculator switches both when you toggle.
- Enter your turnover or gross receipts for the year — total collections before any expenses at all. This is the base on which the deemed income is computed, so getting it right matters more than any other input.
- Enter the share of those receipts you took in cash, as a percentage. For a business this changes your deemed rate, because receipts through banking or prescribed electronic modes are deemed at 6% while other receipts are deemed at 8%. It also decides which turnover limit you get, which is the part most people miss.
- Enter your actual profit as per books — real revenue less every genuine expense, including rent, salaries, depreciation and interest. Enter zero if you broke even or made a loss; the calculator handles it.
- Enter the extra annual cost that the books route imposes on you over and above presumptive: the accountant, the bookkeeping, the audit fee, and the time it consumes. The default is a mid-market figure. Replace it with a real quote, because this number moves the break-even directly.
- Enter any other income you already have. Business income stacks on top of it, so a person with ₹40 lakh of salary faces a very different marginal rate on the same business profit than someone with none, and the calculator reports the marginal cost rather than your whole tax bill.
- The cash-receipt cap defaults to the prescribed 5% share that gates the higher turnover limit. It is left editable so you can stress-test your own position against a different assumption rather than take a hard-coded number on trust.
- Read the limit row first. It tells you which of the two turnover limits applies to you and how much headroom you have left, or by how much you have already gone over. If you are over, Section 58 is closed and the rest of the comparison is for reference only.
- Read the deemed income row next. For a business with mixed receipts this is a blend of 6% and 8%, so your effective deemed rate sits somewhere between the two and moves as your cash share moves. For a profession it is a flat 50% of gross receipts.
- Compare the two cost rows. The presumptive row is tax alone, because the scheme dispenses with the books. The books row is tax plus the compliance cost you entered, because that cost is real money and belongs in the comparison.
- Read the break-even actual margin and the distance from it. This is the figure the calculator exists for: the margin above which presumptive is cheaper and below which books are. Sitting within a point or two of it means the decision is finely balanced and worth revisiting each year.
- Read both trap boxes. The first covers eligibility and the cash-receipt cap. The second covers what happens if you declare below the deemed rate, and the multi-year lock-out that follows opting out of the scheme — the consequence that catches people two and three years later.
What Section 58 actually does, and what you give up for it
Presumptive taxation is a bargain the statute offers to small businesses and professionals, and like most bargains it is worth understanding before accepting. Under Section 58 of the Income-tax Act, 2025 — the successor to the old Sections 44AD for business, 44ADA for professionals and 44AE for goods carriages — an eligible taxpayer may declare income at a prescribed percentage of turnover and be done with it. For a business that percentage is 6% of receipts taken through banking channels or prescribed electronic modes and 8% of all other receipts. For a specified profession it is 50% of gross receipts, with no split by mode of receipt. Whatever you actually earned is irrelevant: if your real margin was 20%, you still declare the deemed figure, and if it was 2%, you still declare the deemed figure.
What you receive in exchange is administrative, and it is worth real money. You are relieved of the obligation to maintain full books of account for the business. You are relieved of a tax audit under Section 63 (old Section 44AB) on the ground of turnover, for as long as you remain within the scheme and declare at or above the deemed rate. And you pay your entire advance tax in a single instalment by 15 March rather than in four instalments across the year, which removes the whole apparatus of quarterly estimation and, with it, most of the exposure to interest under Sections 424 and 425. For a one-person consultancy or a small trading concern, the combined saving in fees, software and attention runs to tens of thousands a year.
What you give up is the right to be taxed on what you actually earned. No deduction is available for any business expense, because they are all treated as already allowed inside the deemed percentage. Depreciation is deemed to have been claimed and the written-down value of your assets is reduced accordingly, so the deduction is not merely deferred — it is consumed. For a firm, remuneration and interest paid to partners are not separately deductible from presumptive income either. If your business is capital-heavy, thin-margin, or has just had an expensive year, the deemed figure can be several multiples of your real profit, and the scheme becomes an expensive convenience rather than a cheap one.
The eligibility gate is narrower than most people assume. The scheme is available to a resident individual, Hindu undivided family or partnership firm other than a limited liability partnership. A private limited company cannot use it at all. Certain activities — agency business and income in the nature of commission or brokerage among them — are outside the business scheme regardless of turnover. And the professional scheme applies to specified professions rather than to anyone who calls themselves a professional. Check the gate before you model the arithmetic.
The break-even margin — why it is not the deemed rate
Ask most people when presumptive taxation makes sense and you will get the same answer: when your real profit margin is higher than the deemed rate. The logic looks airtight. If Section 58 deems 6% and you actually earn 12%, declaring 6% means being taxed on half your real income, so of course you take the scheme. If you actually earn 3%, declaring 6% means being taxed on twice what you made, so of course you keep books. The switch-over must therefore be at 6%.
It is not, and the reason is that the two routes are not equally expensive to operate. Presumptive costs you tax and almost nothing else. The books route costs you tax plus the machinery required to substantiate the lower figure — a bookkeeper or accounting subscription through the year, a professional to close the accounts, and, in most cases where you declare below the deemed rate, a full tax audit under Section 63. Call that ₹35,000 a year for a small business, which is a conservative figure once an audit is in play. That ₹35,000 has to be earned back out of tax saved before the books route breaks even at all. And because tax saved is only a fraction of income saved — 20 or 30 paise in the rupee at most slabs — you need to be several rupees of income below the deemed figure before the saving covers the fee.
Work it through on a real case. A trader with ₹80 lakh of turnover, all of it received digitally, is deemed to earn 6%, or ₹4,80,000. Suppose their real profit is ₹4,00,000, a margin of 5%, and they have ₹40 lakh of other income so that the marginal rate on this slice is 31.2% including cess. Presumptive costs ₹1,49,760 of tax. Books cost ₹1,24,800 of tax plus ₹35,000 of compliance, or ₹1,59,800 in total. Presumptive wins by ₹10,040, even though the real margin is a full percentage point below the deemed rate. The calculator puts the true break-even at 4.60%, not 6.00%. That gap of 1.4 percentage points is worth ₹1.12 lakh of turnover-equivalent profit, and it is invisible to anyone applying the folk rule.
The gap widens as the compliance cost rises and narrows as the marginal rate rises, which produces a counter-intuitive result worth internalising: the higher your other income, the closer the break-even sits to the deemed rate, because each rupee of income you shelter is worth more in tax. A small trader with no other income and a ₹35,000 audit bill may find presumptive cheaper at any margin at all, because their tax saving under the books route is capped by the Section 156 rebate at zero. A high earner with the same business will find the break-even only marginally below the deemed rate. Same business, same turnover, opposite conclusion — which is precisely why this cannot be answered from a rule of thumb.
The turnover limits, and the cash-receipt trap that decides which one you get
Section 58 comes with turnover ceilings, and there are two of them for each category rather than one. For a business, the base limit is ₹2 crore of turnover and the higher limit is ₹3 crore. For a profession, the base limit is ₹50 lakh of gross receipts and the higher limit is ₹75 lakh. Most summaries quote only the higher figure, which is where the trouble starts, because the higher limit is conditional and the condition has nothing to do with turnover.
The condition is about cash. You get the higher limit only if receipts in cash — meaning otherwise than by an account payee cheque, bank draft, electronic clearing system or other prescribed electronic mode — do not exceed a small prescribed share of total turnover. That share is 5%. Go over it, even fractionally, and the higher limit is simply unavailable to you; the limit that applies is the base one, and if your turnover is between the two figures you have fallen out of the scheme entirely.
The practical consequence is severe and badly understood. A trader with ₹2.4 crore of turnover and 3% cash receipts is comfortably inside Section 58, because the ₹3 crore limit applies and they have ₹60 lakh of headroom. The identical trader with the identical ₹2.4 crore of turnover but 12% cash receipts is not eligible at all. Nothing about the size of their business changed. What changed is a handful of customers paying in notes rather than by transfer, and it cost the taxpayer the entire scheme — books, an audit, quarterly advance tax and the professional fees behind all three. The calculator flags this case explicitly because the disqualification is so easy to walk into and so cheap to avoid.
Two further points make the cash test more dangerous than it looks. First, it is applied for the year as a whole and after the fact. You do not know in April whether you will pass it; you know in March. A single heavy-cash quarter can push you over the line and retrospectively disqualify a year for which you have kept no books at all, leaving you to reconstruct them under time pressure with an audit deadline approaching. Second, the same 5% test with the same trap appears in the tax audit provisions of Section 63, where it governs whether your audit threshold is ₹1 crore or ₹10 crore. The same operational discipline — get receipts onto banking channels — earns the benefit twice. If you are anywhere near either limit, moving collections out of cash is the highest-value change available to you, and it is an operational change rather than a tax one.
Declaring below the deemed rate: what it triggers under Section 63
You are entitled to declare your real income if it is lower than the deemed figure. Nothing in the law forces you to over-declare. But the entitlement carries a condition, and the condition is the whole reason the books route is expensive. If you declare income lower than the deemed percentage and your total income exceeds the basic exemption limit, you are required to maintain full books of account and to get them audited under Section 63 of the Income-tax Act, 2025 — the provision that carried forward the old Section 44AB. The audit is not optional, it is not a function of your turnover, and it applies to a business far below the ordinary audit thresholds.
That is the mechanism that puts the compliance cost into the comparison. A trader with ₹80 lakh of turnover is nowhere near the ordinary Section 63 turnover trigger, and if they simply declared the deemed 6% they would have no audit obligation whatsoever. Choosing to declare 5% instead — a difference of ₹80,000 of income — imports the entire audit regime. The tax saved on ₹80,000 might be ₹25,000; the audit and bookkeeping to justify it might cost ₹35,000. That is a net loss, and it is the shape of the trap rather than an outlier.
Note the second limb carefully, because it is what saves the smallest taxpayers. The obligation bites only where total income also exceeds the basic exemption limit. A very small trader declaring a real loss on modest turnover, whose total income is under the exemption limit, does not fall into books and audit on this ground. The calculator applies that test and says so, because the difference between the two positions is several tens of thousands of rupees a year and a great deal of administrative pain. It is also a position that changes the moment other income arrives — a spouse's rental income routed to you, a maturing deposit, a capital gain — so it should be re-tested annually rather than assumed.
There is a further consequence that is easy to overlook. Once an audit is required, the due date for filing shifts, the audit report has to be filed ahead of the return, and failure on either limb carries its own penalty — a percentage of turnover, subject to a cap. So the real cost of declaring below the deemed rate is not only the fee but the compressed timetable and the additional failure points. Where the tax saving is marginal, the operational simplicity of declaring at the deemed rate is worth paying a little for.
The lock-out — why this is a five-year decision, not a one-year one
The trap that catches the most people is not visible in the year they make the decision. It surfaces two or three years later, and by then it cannot be undone. For a business, the presumptive scheme is not something you can dip in and out of as it suits you. Once you have declared under Section 58 and then opt out — by declaring a lower, real profit in a subsequent year — you are locked out of the scheme for a run of following assessment years, and throughout that lock-out period you are required to maintain books of account and to have them audited if your total income exceeds the exemption limit. Five years is the period that has historically applied. You cannot simply return to presumptive the moment it suits you again.
Think about what that means for a business with volatile margins, which is most small businesses. Year one is good, you declare 6% presumptive, everything is simple. Year two is bad — a customer defaults, or you buy a machine — and your real profit is 1%. Declaring the deemed 6% on a bad year is painful, so you opt out and declare the real figure. You have now bought yourself an audit for year two, and an audit for years three, four, five and six as well, whether or not those years are good ones. The saving in year two may have been ₹80,000. The cost across the lock-out may be ₹1,75,000 of fees on top of tax computed on your actual profit each year, plus the loss of the single-instalment advance tax concession throughout.
The correct way to make this decision, therefore, is not to compare this year's two numbers. It is to form a view about the next five years. If your margin is comfortably and reliably above the break-even the calculator gives you, opt in and stay in, and treat a single bad year as the price of the scheme rather than a reason to leave it. If your margin is genuinely and persistently below the deemed rate — as it is for a great many low-margin traders and distributors — do not opt in at all in the first place, because entering and then leaving is the worst of the three positions. If you are close to the line, the flexibility of never having entered may itself be worth more than the fee saving of a single year.
One asymmetry is worth knowing: the lock-out attaches to the business scheme. The professional scheme has historically been more forgiving, being tested year by year on receipts rather than carrying the same multi-year consequence for opting out. That makes the professional version of this decision genuinely annual and the business version genuinely long-term, and it is a distinction that ought to change how much time you spend on each. Confirm the position for the year you are filing before acting on it, and take advice where the numbers are large.
The advance tax concession, and the other things people forget to price
The single-instalment advance tax rule is the most undervalued part of the presumptive bargain. An ordinary taxpayer with business income must pay advance tax in four instalments — 15% by 15 June, 45% cumulative by 15 September, 75% by 15 December and 100% by 15 March — with interest under Section 425 running at 1% a month on each shortfall, and interest under Section 424 on anything still unpaid at the end of the year. A taxpayer under Section 58 pays the whole liability in one instalment by 15 March. That removes three estimation exercises from the year and, with them, three opportunities to get it wrong. For a seasonal business whose income is unknowable in June, this is worth more than the fee saving.
Several other items belong in the comparison and are routinely left out of it. Losses: under presumptive you declare a positive deemed income, so a genuinely loss-making year produces no loss to carry forward. Keeping books preserves the loss for set-off in future years, and where the loss is substantial that carry-forward can be worth more than several years of fee savings. Depreciation: presumptive treats depreciation as already allowed and reduces the written-down value of your assets accordingly, so a capital-heavy business is quietly consuming a deduction it is not visibly claiming. Partner remuneration: a firm cannot separately deduct remuneration or interest to partners from presumptive income, which materially changes the arithmetic for a two-partner firm and is a common source of surprise.
On the other side, presumptive has a defensive value that is hard to quantify but real. A return filed at the deemed rate, with no books, presents a small and uncontroversial surface. A return declaring a 1% margin on ₹2 crore of turnover, supported by books, is a more interesting proposition to the assessing officer, and scrutiny under Section 270 brings its own costs in time and professional fees quite apart from any adjustment. That is not a reason to over-declare income you did not earn, and nobody should treat it as one. But where the calculator shows the two routes within a few thousand rupees of each other, the quieter route has something to recommend it.
Finally, a word on what this calculator does not model. It computes tax for a resident individual under the new regime and reports the marginal cost of this income on top of your other income. It does not model a firm, a goods-carriage business under the third limb of Section 58, GST, partner remuneration, brought-forward losses, or interest under Sections 424 and 425. It assumes your compliance cost estimate is accurate, which is the input most worth getting a real quote for. Where your turnover is near a limit, where you have losses to preserve, or where you are contemplating leaving a scheme you have already entered, the output is the right question to bring to your advisor rather than the final answer.
Frequently asked questions
Is presumptive taxation always better if my margin is above the deemed rate?
Above the deemed rate, yes, and comfortably so — you are being taxed on less than you earned and saving the compliance cost as well. The more interesting finding is that presumptive often wins even when your margin is slightly below the deemed rate, because keeping books costs real money that has to be recovered out of tax saved. On ₹80 lakh of turnover with a ₹35,000 compliance bill and a 31.2% marginal rate, the true break-even sits at about 4.60% against a 6% deemed rate. The calculator computes yours exactly.
What are the deemed rates under Section 58?
For a business, 6% of receipts taken through banking channels or prescribed electronic modes and 8% of all other receipts, so a business with mixed collections has a blended effective rate between the two. For a specified profession, a flat 50% of gross receipts with no split by mode of receipt. Goods-carriage operators have their own per-vehicle basis under a separate limb, which this calculator does not model. These are minimums — you may always declare more, and doing so avoids the audit consequence entirely.
What is my turnover limit — ₹2 crore or ₹3 crore?
It depends on your cash receipts, not on your turnover. The higher limit of ₹3 crore for a business, or ₹75 lakh for a profession, applies only where receipts in cash do not exceed 5% of turnover. Over that share and the base limit applies instead — ₹2 crore for business, ₹50 lakh for profession. A trader with ₹2.4 crore of turnover is eligible at 3% cash and completely ineligible at 12% cash. Same business, same turnover, opposite outcome.
What happens if I declare less profit than the deemed rate?
You are allowed to, but if your total income also exceeds the basic exemption limit you must then maintain full books of account and have them audited under Section 63 of the Income-tax Act, 2025, the old Section 44AB. That obligation applies regardless of how small your turnover is. So a trader at ₹80 lakh of turnover who would otherwise have no audit at all imports the whole audit regime by declaring 5% instead of 6% — often for a tax saving smaller than the audit fee.
Can I switch between presumptive and books each year?
Not freely, and this is the trap that surfaces years later. For a business, once you have declared under Section 58 and then opt out by declaring a lower real profit, you are locked out of the scheme for a run of following assessment years — historically five — and must keep books and be audited throughout, even in years when presumptive would have suited you perfectly. Model the next five years before leaving the scheme for a one-year saving. The professional scheme has historically been tested year by year without the same multi-year consequence.
Do I still have to pay advance tax under presumptive?
Yes, but in one instalment rather than four. A taxpayer under Section 58 pays the entire advance tax liability by 15 March, where an ordinary business taxpayer must pay 15% by 15 June, 45% cumulative by 15 September, 75% by 15 December and the balance by 15 March, with interest under Section 425 on each shortfall. For a seasonal business whose income is genuinely unknowable in June, this concession is often worth more than the saving in accountant's fees.
Who cannot use Section 58 at all?
A private limited company cannot use it. A limited liability partnership cannot use the business scheme. Non-residents are outside it. Certain activities are excluded regardless of turnover, including agency business and income in the nature of commission or brokerage. The professional scheme is confined to specified professions rather than to anyone who describes themselves as a professional. Check the eligibility gate before modelling the arithmetic, because none of the numbers matter if the gate is closed.
What does presumptive cost me that this calculator does not show in the tax figures?
Three things worth pricing separately. A genuinely loss-making year produces no loss to carry forward, because you declare a positive deemed income — where the loss is large, the carry-forward can be worth more than years of fee savings. Depreciation is treated as already allowed and the written-down value of your assets is reduced accordingly, so a capital-heavy business is consuming a deduction silently. And a firm cannot separately deduct partner remuneration or interest from presumptive income, which materially changes the arithmetic for a two-partner firm.
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