TDS thresholds are a cliff, not a slab

Income tax slabs are marginal — crossing into a higher slab only taxes the extra income at the higher rate, never the income you’d already earned below it. Most TDS thresholds don’t work that way at all, and assuming they do is an easy, costly mistake.

What “cliff, not slab” actually means

For most of the everyday TDS sections — professional fees, contractor payments, rent, commission — the rule is simple: at or below the threshold, no TDS applies at all. The instant a payment exceeds it, TDS applies to the entirepayment, not just the portion above the threshold. There’s no partial or marginal treatment the way income tax slabs work — it’s a single all-or-nothing line.

One rupee, two very different outcomes

Section 194J’s professional/technical fees threshold is ₹50,000 a year, at a 10% rate.

The same shape holds at a much larger scale. Section 194-I’s rent threshold for land and building is ₹6,00,000 a year, also at a 10% rate: exactly ₹6,00,000 in annual rent attracts no TDS, but ₹6,00,001 triggers ₹60,000.10 of TDS on the full amount — a swing of tens of thousands of rupees from a single rupee of rent.

Why this matters for planning a payment

The practical takeaway isn’t to try to artificially stay just under a threshold — TDS rules look at the aggregate amount paid or credited to the same payee under a section over the year, not each individual invoice, so splitting one contract into several smaller payments to dodge the threshold doesn’t actually work and can invite scrutiny. What matters is simply not being caught off guard: anyone receiving a payment that could plausibly land near one of these thresholds should expect that crossing it, even narrowly, changes the net amount received by far more than the amount crossed by. Building that into cash flow expectations — rather than assuming a smooth, proportional deduction — is the real value of understanding where these cliffs sit.

It also cuts the other way for anyone deducting TDS: a payment sitting right at a threshold is worth double-checking carefully, since getting the applicability call wrong in either direction — deducting when it wasn’t required, or failing to deduct when it was — creates its own separate compliance problem.