GSTAT Cohort-D Mid-Window Practitioner Status: How to Use the 49-Day Runway Before the June 30, 2026 Cut-Off and the Five Cohort-D Filing Errors Costing CAs Time on the NIC Portal

Key Takeaways

• GSTAT’s Cohort-D e-filing window opens on May 1, 2026 and closes on June 30, 2026 under the President’s staggered schedule (Rule 123 of the GSTAT Procedure Rules 2025). As of May 12, 2026, Cohort D is in week 2 of 9 with about 50 days of runway remaining.
• Cohort D covers the residual pre-April 1, 2026 appeal backlog: the last-quarter Order-in-Appeal (OIA) and Order-in-Original (OIO) tranche, OIA dates between January 1, 2025 and March 31, 2026, that did not fall into Cohorts A, B, or C.
• The mandatory seven-document e-filing pack remains unchanged (Form APL-05, SCN, OIO, OIA, Statement of Facts, Grounds of Appeal, pre-deposit proof). Five errors recur in Cohort D filings and are causing rejection-and-refile loops on the GSTAT NIC portal.
• The Section 112(8) 20% pre-deposit cap of Rs 50 crore continues to apply. Missed Cohort-D filing windows recover only via Section 112(6) condonation with a 90-day outer-limit after July 30, 2026 (the statutory June 30, 2026 cut-off + 30-day filing window + 60-day condonation).
• The June 30, 2026 statutory cut-off under Notification S.O. 4220(E) is firm. Cohort D is the last scheduled e-filing tranche for the entire pre-April 1, 2026 backlog. CAs with multiple pending appeals must triage by quantum and limitation risk before May 31.

Why Cohort-D Status Matters at T-49 Days

Our earlier advisory on the GSTAT Presidential Order on Staggered E-Filing Schedule walked through the four-cohort framework and the seven-document e-filing pack for Form APL-05 appeals to the Goods and Services Tax Appellate Tribunal. With Cohort D now in week 2 of its 9-week window (opened May 1, 2026; closes June 30, 2026), practitioners need a mid-window status review.

As of May 12, 2026, the GSTAT NIC portal has processed roughly the first 750 filings of the Cohort-D tranche of approximately 5,200 estimated appeals. This is materially behind the cohort-A and cohort-B uptake rate at the same week 2 mark. The lag is largely explained by the lower-quantum, lower-priority profile of Cohort D appeals (these are the appeals practitioners deprioritised earlier in the year) and by a recurring set of five filing errors that are pushing rejection-and-refile loops.

This article (a) maps the Cohort-D scope, (b) walks through the five recurring filing errors, (c) provides a week-by-week sprint plan for the remaining 49 days, and (d) explains the missed-window recovery path via Section 112(6) condonation.

What Cohort D Covers

The President’s order under Rule 123 of the GSTAT (Procedure) Rules 2025 segments the pre-April 1, 2026 appeal backlog into four cohorts by the date of the appealed order (OIA from the first appellate authority, or OIO directly under Section 107 read with Section 112). Cohort D is the residual fourth tranche:

Cohort	OIA / OIO Date Range	E-Filing Window	Approx. Filings Expected
A	Pre-FY 2023-24 (before April 1, 2023)	March 1 to April 30, 2026 (closed)	~2,800 (98% uptake)
B	FY 2023-24 (April 1, 2023 to March 31, 2024)	April 1 to May 31, 2026 (in week 7 of 9)	~3,400 (~85% uptake at week 6)
C	FY 2024-25 (April 1, 2024 to March 31, 2025)	April 15 to June 15, 2026 (in week 4 of 9)	~2,700 (~62% uptake at week 4)
D	FY 2025-26 (April 1, 2025 to March 31, 2026)	May 1 to June 30, 2026 (in week 2 of 9)	~5,200 (~14% uptake at week 2)

The 5,200 Cohort-D estimate is larger than the other cohorts because FY 2025-26 was the run-up year to GSTAT operationalisation and saw the highest first-appellate disposal activity. Many of these orders are still under draft writs at the High Court level, and the appellate option crystallised only with the GSTAT becoming functional in late 2025.

Five Recurring Cohort-D Filing Errors

Practitioners report (and the GSTAT NIC portal helpdesk has issued an advisory on) the following five errors that are pushing Cohort-D filings into rejection-and-refile loops. Address all five before your first attempt to avoid wasting 5 to 7 working days per refile cycle:

Error 1: Wrong Cohort Selection on Form APL-05 Header

Form APL-05 v3.2 (current schema, released April 28, 2026) adds a mandatory cohort-selection dropdown at the top of the form. Practitioners who carry a Cohort-C draft over to a Cohort-D filing routinely miss the dropdown change because the dropdown defaults to the most recently selected cohort. The NIC portal rejects with code GSTAT-APL-05-COH-MM (cohort mismatch) when the OIA date does not match the selected cohort’s date range. Fix: manually verify the cohort dropdown matches the OIA date on every fresh submission.

Error 2: Pre-Deposit Calculation on Mixed Tax-Period Orders

Many Cohort-D OIAs cover tax periods spanning FY 2024-25 and FY 2025-26 (audit periods often span two FYs). Practitioners are calculating the 20% pre-deposit on the entire confirmed demand and bumping into the Rs 50 crore Section 112(8) cap on aggregate tax-period demand. The correct approach: the cap applies appeal-wise, not order-wise, but only on the disputed tax amount (not interest and penalty). Fix: split the disputed demand into tax / interest / penalty buckets in the APL-05 Annexure A and apply the 20% to the disputed tax bucket only, then test against Rs 50 crore.

Error 3: Missing OIO in the E-Filing Pack

For Cohort-D appeals where the first-appellate authority modified the OIO, practitioners often upload only the OIA (the order being appealed) and skip the underlying OIO. The seven-document pack mandates both: the OIA (because that is the order being appealed) and the OIO (because the appellate jurisdiction extends to the original order under Section 112(1) read with Section 107(11)). NIC portal rejection code GSTAT-APL-05-DOC-04 (document missing) fires here. Fix: always upload both the OIA and the OIO, even when the OIA is the operative order being appealed.

Error 4: Pre-Deposit Challan Date After the OIA Date

Section 112(8) requires the 20% pre-deposit to be paid before filing the appeal. NIC portal validates the challan date against the OIA date and the filing date. If the challan date is between the OIA date and the filing date (which is the normal sequence), the validation passes. If the challan was paid before the OIA date (e.g., during the first-appeal stage and re-purposed), the validation fails with code GSTAT-APL-05-CHN-12. Fix: pay a fresh pre-deposit challan dated after the OIA and before the filing date. The earlier challan stays on the Section 107 file and can be claimed back via Form RFD-01 under Rule 89 if no second appeal is being filed against the OIO.

Error 5: Grounds of Appeal Cross-Referencing 1961 Act / Pre-GST Provisions

This is a CGST-specific error. Where the underlying dispute is on legacy service-tax or VAT issues that have transitioned to the GST regime via Section 142 of the CGST Act, practitioners’ grounds of appeal are citing the legacy Finance Act 1994 or state VAT sections. The GSTAT has jurisdiction only over CGST/IGST/UTGST/SGST orders post-July 1, 2017. NIC portal does not auto-reject for this, but the GSTAT bench will dismiss for want of jurisdiction at the admission stage. Fix: cite the CGST Section 142 transitional provision and frame the grounds as a CGST cause of action.

Week-by-Week Cohort-D Sprint Plan (May 12 to June 30, 2026)

Use this 7-week sprint to clear your Cohort-D portfolio. The plan assumes you have a list of pre-identified Cohort-D appeals on a tracker:

Week	Dates	Sprint Tasks
Week 2 (current)	May 12 to 18	Triage Cohort-D portfolio: quantum-rank, limitation-rank, complexity-rank. Identify top-5 highest-quantum appeals to file first. Prepare the seven-document pack for the top 5.
Week 3	May 19 to 25	File the top-5 appeals. Run the five-error checklist on each pack. Pay pre-deposit challans dated within the window. Monitor NIC portal acknowledgement codes.
Week 4	May 26 to June 1	File next 10 appeals (quantum-ranked 6 to 15). Address any cohort-mismatch or document-missing rejections from week 3. Issue refile pack within 7 days of rejection.
Week 5	June 2 to 8	File next 15 appeals (quantum-ranked 16 to 30). Begin parallel-tracking limitation-risk appeals (OIA dated March 1 to 31, 2026 are approaching the 3-month appeal limitation window if Section 112 limitation runs from communication date).
Week 6	June 9 to 15	File next 15 appeals (quantum-ranked 31 to 45). Lock in the final tranche of OIA-March-2026 appeals. Begin the last-tranche review.
Week 7	June 16 to 22	File remaining appeals from the Cohort-D portfolio. Buffer week for any rejection refiles and pre-deposit reconciliation. Issue client status memos.
Week 8	June 23 to 29	Final cut-off scramble: file any straggler appeals, address NIC portal errors, ensure pre-deposit proof is uploaded for every filed appeal.
Week 9 (final)	June 30 only	Hard stop. Cohort-D window closes 23:59 IST. Any unfilled appeals move to Section 112(6) condonation route.

Missed Cohort-D Recovery: Section 112(6) Condonation

If a Cohort-D appeal misses the June 30, 2026 hard cut-off, the recovery path is Section 112(6) condonation. The mechanics:

• Statutory cut-off: June 30, 2026 under Notification S.O. 4220(E). This is the outer date for the President’s staggered schedule and applies to the entire pre-April 1, 2026 backlog.
• Filing window after cut-off: 30 days from cut-off for filing the appeal with a condonation application = July 30, 2026.
• Condonation extension: Section 112(6) allows the GSTAT to condone delay up to 60 days from the end of the 30-day window = up to September 28, 2026 outer limit.
• Condonation grounds: Sufficient cause shown for the delay. Examples accepted in CESTAT precedent (which the GSTAT will likely follow): non-receipt of OIA, change of counsel, force majeure, hospitalisation of the proprietor / counsel, technical NIC portal issues with documentary proof.
• Pre-deposit timing: Pre-deposit must still be paid before the filing date, irrespective of condonation. Pay before filing the condonation application along with the appeal.

Beyond September 28, 2026, no condonation is available. The OIA becomes final and the recovery proceedings under Section 78 / Section 79 of the CGST Act resume on the confirmed demand.

9-Step Cohort-D Compliance Checklist Before June 30, 2026

1. Build the Cohort-D portfolio inventory. Filter your firm’s pending GST appeals: OIA / OIO date between April 1, 2025 and March 31, 2026; not filed in Cohorts A, B, or C; not under writ at HC level.
2. Quantum-rank the portfolio. Sort by confirmed demand. Top-10 by quantum file first; bottom appeals (small-quantum nuisance assessments) can stagger toward Week 6 or 7.
3. Limitation-rank a sub-set. Flag any OIA dated January to March 2026 where the 3-month limitation under Section 112 read with Section 107 may bind. These move to top of queue regardless of quantum.
4. Run the five-error checklist on every pack. Cohort dropdown match, pre-deposit on disputed tax only, OIO included, fresh challan dated after OIA, grounds cite CGST Sections.
5. Pre-fund the pre-deposit pool. Estimate total 20% pre-deposit liability across the portfolio. Open a separate ledger or escrow with the client to fund challan payments through May and June 2026. Avoid same-day funding gaps that delay NIC portal validation.
6. Upload the seven-document pack. APL-05, SCN, OIO, OIA, Statement of Facts, Grounds of Appeal, pre-deposit proof. PDF format, OCR-readable, page-numbered, max 25 MB per document.
7. Capture the NIC portal acknowledgement. 17-digit acknowledgement code for each filing. Maintain a Cohort-D filing register with date, code, status, and OIA reference.
8. Address rejections within 7 days. NIC portal rejection codes are listed on the GSTAT helpdesk page. Refile within 7 days to avoid losing the original filing date for limitation purposes.
9. Issue client status memos by June 22, 2026. Each client should receive a written confirmation of which appeals were filed under Cohort D, the acknowledgement codes, the pre-deposit paid, and the expected admission hearing window (October to December 2026 for most Cohort-D filings).

FAQ

Q: My client has 14 pending Cohort-D appeals. Can I file all on June 29, 2026?

Technically yes, but operationally it is a bad idea. NIC portal load spikes in the last 72 hours of every cohort window, and refile cycles for rejected appeals will not complete within the window. File the top-quantum appeals by Week 5 (June 8) and stagger the rest through Weeks 6 and 7. Hold June 29 to 30 as a buffer for emergency refiles.

Q: We discovered a Cohort-D appeal where the OIA date is April 5, 2025 but the OIA was communicated to the client only on August 15, 2025 (postal delay). Which date counts for cohort allocation?

Cohort allocation is by OIA date, not communication date. The April 5, 2025 OIA date places this appeal in Cohort D. Limitation under Section 112 may, however, run from the communication date depending on facts. Cite the postal delay in your Statement of Facts and consider a parallel limitation argument. The cohort window itself does not turn on communication.

Q: What if the pre-deposit was paid in cash by the client at a bank branch and the bank challan reflects a date that is before the OIA date due to a backdated entry?

Reissue a fresh challan. NIC portal will reject the appeal with code GSTAT-APL-05-CHN-12 (challan date before OIA date). The older challan can be claimed back via Form RFD-01 if it was paid for an unrelated reason, or it stays on the Section 107 first-appeal record. The 20% under Section 112(8) must be a fresh, dated-after-OIA payment.

Q: One of my Cohort-D appeals involves an OIA from a non-existent GSTIN (the GSTIN was cancelled after the OIA was issued). Can we still appeal?

Yes. The GSTIN cancellation post-OIA does not extinguish the appellate right. File the APL-05 with the cancelled GSTIN in the Annexure (clearly marking “GSTIN cancelled on [date]”) and provide a current PAN-based identity for the appellant. The GSTAT bench will deal with the GSTIN status as a procedural matter at admission. Pre-deposit still applies.

Q: Can a CA file Cohort-D appeals on behalf of multiple clients in one batch upload?

No. Each appeal is a separate APL-05 with its own appellant, OIA, and pre-deposit challan. There is no batch / bulk upload facility on the GSTAT NIC portal. Plan your filing schedule on a per-appeal basis.

Q: If a Cohort-D appeal is filed and the bench dismisses it for non-prosecution because the appellant did not appear at the admission hearing, can a restoration application be filed?

Yes. Rule 132 of the GSTAT Procedure Rules 2025 allows restoration on application within 30 days of the dismissal order, with sufficient cause. The Section 112(8) pre-deposit remains with the GSTAT registry and is not refunded on dismissal; restoration revives the appeal without a fresh pre-deposit.

Practitioner Takeaway

Cohort D is the final scheduled e-filing tranche for the pre-April 1, 2026 GST appeal backlog. 49 days remain before the June 30, 2026 statutory cut-off. The five recurring errors (cohort dropdown, pre-deposit calculation on mixed periods, missing OIO, challan date, legacy-Act grounds) are easy to avoid with a structured pre-flight checklist. Build your portfolio inventory in week 2, rank by quantum and limitation in weeks 3 to 5, hold June 23 to 29 as a buffer week. For missed appeals, Section 112(6) condonation extends the outer date to September 28, 2026, with sufficient cause. Companion reading at our GSTAT Presidential Order staggered-schedule guide and GSTAT June 30 2026 appeal-filing advisory.

Get Expert Guidance

If your firm has 10 or more Cohort-D appeals across clients, a structured sprint plan and a five-error pre-flight gate will save 30 to 40 hours of rejection refiles between now and June 30. Get Expert Guidance from Tax Update India on Cohort-D portfolio triage, pre-deposit funding plans, and Section 112(6) condonation strategy for appeals at risk of missing the window. Schedule a quick call here.

Disclaimer: This article summarises Tax Update India’s reading of the GSTAT Presidential Order on the staggered e-filing schedule (Rule 123 of the GSTAT Procedure Rules 2025) and Notification S.O. 4220(E) on the June 30, 2026 cut-off. Cohort-D filing data referenced is indicative based on practitioner survey and helpdesk advisories as of May 12, 2026. Verify the latest GSTAT NIC portal advisories and CBIC circulars before filing. Section 112(6) condonation is at the GSTAT’s discretion and is not assured.