TDS Mismatch Estimator: Quantify Your 26AS Gap
Estimate the working capital you are carrying as TDS receivable that has not reflected in Form 26AS — and the interest cost and analyst hours that gap is consuming every year. Adjust the four inputs to match your scale; the estimate updates instantly. See the methodology note below for the assumptions.
Your TDS profile
Total TDS deducted by your counterparties (customers, marketplaces, contractors) across all sections in a financial year.
Distinct counterparties who deduct TDS from payments to you. Each becomes a chase target when 26AS reconciliation surfaces a gap.
Industry observation: 15-30% is typical for businesses without quarterly 26AS reconciliation; 5-10% is achievable with structured reconciliation.
Average elapsed days between deduction and the credit appearing correctly in 26AS for cases that eventually resolve. Working capital is locked over this window.
How the estimate decomposes
The estimate above is the headline number. The breakdown below shows the calculation step by step so you can sanity-check it against your own data.
| Step | Description | Value |
|---|---|---|
| 1 | Annual TDS deducted on payments to you | ₹5,00,00,000 |
| 2 | Mismatch rate — share not in 26AS | 22% |
| 3 | Estimated 26AS gap (Step 1 × Step 2) | ₹1,10,00,000 |
| 4 | Avg lag in days, expressed as fraction of year | 180 / 365 = 0.493 |
| 5 | Interest at 9% on locked working capital (Step 3 × 9% × Step 4) | ₹4,88,219 |
| 6 | Deductees with open gap (deductees × mismatch rate) | 26 deductees |
| 7 | Annual chase hours (Step 6 × 4 quarters × 3 cycles × 12 min) | 317 hours |
Methodology and assumptions
Mismatch rate
The default 22% reflects the upper end of what businesses without structured quarterly 26AS reconciliation typically carry. Companies that reconcile quarterly with a structured tool typically operate at 5–10%.
Cost of funds
9% blended is approximately RBI repo plus a 200–250 bps spread typical for Indian mid-market working-capital lines. Adjust mentally if your treasury rate is different.
Chase time
12 minutes per chase cycle per deductee covers email-out, deductor follow-up, internal recheck. Three cycles per quarter is a reasonable mean for medium-difficulty cases.
Achievable target
The "achievable gap" output uses 6% as a reference floor — what's typically reachable when 26AS reconciliation is run quarterly with deductor-level exception routing.
This calculator is an estimator, not a substitute for your actual TDS reconciliation. Real exposure depends on deductor mix, sector, section composition (194C vs 194O vs 194Q vs 194J), and your filing cadence. For the regulatory framework, refer to the Income Tax Department and the TRACES portal for 26AS access.
Related guides
TDS Reconciliation Software
The product page covering 26AS, AIS, TDS receivable matching at scale.
TDS Reconciliation Insights
All TDS section guides — 194C, 194J, 194Q, 194O, 194T, 206AB, and the TDS 2026 migration cluster.
ITC Leakage Calculator
Quantify GST input tax credit leakage from suppliers who file late or do not file at all.
Frequently Asked Questions
What is a TDS mismatch and why does it matter? +
A TDS mismatch is the gap between the TDS your counterparty has deducted from a payment to you and the amount that has actually reflected in your Form 26AS or AIS. The deduction reduces your bank receipt today; the credit in 26AS is what allows you to claim the corresponding refund or set-off when filing income tax. A persistent mismatch means working capital is locked, ITR refunds are smaller than they should be, and the gap has to be chased deductor by deductor — often through repeated emails, TAN follow-ups, and 24Q/26Q correction filings on the deductor's side.
How is the estimated mismatch calculated? +
The calculator multiplies your annual TDS deducted by the percentage you indicate is missing or delayed in 26AS. The interest opportunity cost applies your blended cost of funds (default 9% — close to the RBI repo plus working-capital spread typical for Indian mid-market) to the average days the gap persists. Analyst time uses an industry rule-of-thumb of 12 minutes per chase cycle per deductor, three cycles per quarter, applied across the unique deductees. The output is an estimate — actual mismatch will vary by sector, deductor mix, and quarter.
What causes TDS to not appear in 26AS? +
Four common causes: (1) deductor has not yet filed the quarterly TDS return (24Q/26Q/27Q) — common in Q4 where the deadline runs into May; (2) deductor filed the return but used the wrong PAN or quoted a typo — the credit goes to nobody; (3) deductor filed the return but the challan payment did not match (CIN mismatch) — TRACES holds the credit; (4) deductor used the wrong section code, so the credit appears in 26AS under a section that does not match how you booked the income. Each cause needs a different fix and a different counter-party to reach.
What can be done to reduce TDS mismatch? +
Start with quarterly reconciliation, not annual — by quarter-end, you should have run a 26AS download against your TDS receivable ledger and surfaced gaps while the deductor's correction window is still open. Maintain a deductor master with TAN, contact, and historical filing reliability. For high-volume counterparties, set up a monthly TDS confirmation cadence rather than waiting for 26AS. For platform / marketplace deductors (Section 194O), reconcile against the operator's settlement file in addition to 26AS — the platform's deduction record is often more granular than the 26AS line.
How does TransactIG handle TDS reconciliation? +
TransactIG ingests Form 26AS, AIS, and your TDS receivable ledger from your ERP, matches every deduction against your booked TDS receivable on PAN, TAN, section, and quarter, and produces a structured exception register — gaps classified as filing-pending, PAN-mismatch, section-mismatch, or amount-mismatch — with the deductor contact already populated for follow-up. Match rates improve from a typical 51% baseline to 88% on live customer data after configuration.
Stop carrying 26AS gaps as quiet working-capital cost
TransactIG matches 26AS, AIS, and your TDS receivable at PAN, TAN, section, and quarter level. Implementation 2–4 weeks, ISO 27001:2022, AWS Mumbai.