Zero-rated supply refund formula clarified, linking admissible ITC refunds to zero-rated turnover and adjusted total turnover.
The amendment makes the Unique Identity Number applicable across India, restricts retrospective amendments to registration particulars except by written order of the Commissioner, substitutes several registration and refund forms for non-resident online suppliers and UIN holders, and revises refund mechanics for zero-rated supplies. Rule 89(4) now prescribes a formula linking admissible refund to turnover of zero-rated supplies, Net ITC and Adjusted Total Turnover, with sub-rules permitting ITC refunds where suppliers benefited from specified notifications. Quarterly electronic refund filings and documentary verification for non-resident registrants are prescribed.

Commencement of specified GST notification provisions declared effective, activating those State Tax notification clauses from the appointed date.
Appoints 1 February 2018 as the commencement date for the provisions in serial numbers 2(i) and 2(ii) of Notification No. 24/2017 - State Tax, exercising powers under the Arunachal Pradesh Goods and Services Tax Act, 2017, thereby bringing those notification provisions into effect within the State.

Late fee waiver for delayed GSTR 4 filings limits payable daily penalty to prescribed nominal thresholds for filers.
Waives the portion of late fee for delayed FORM GSTR 4 filings that exceeds prescribed nominal daily thresholds, leaving registered persons liable only up to a specified daily amount; a lower daily threshold applies where the return shows nil tax payable, and the waiver covers any late fee in excess of that lower amount.

Aggregate turnover threshold allows certain registered persons to file GSTR-1 quarterly with specified extended deadlines.
Notifies persons with aggregate turnover upto 1.5 crore rupees may follow a special quarterly procedure to furnish details of outward supplies in FORM GSTR-1 for July 2017-March 2018, prescribing specific extended deadlines for each quarter and providing that the special procedure or further extensions under the return-furnishing provisions will be notified in the Official Gazette.

High-turnover taxpayers granted extended deadlines for furnishing FORM GSTR-1 for specified months under state GST notification.
Extension of time is granted for furnishing FORM GSTR-1 by registered persons whose aggregate turnover exceeds the specified threshold, superseding the earlier notification for the months July 2017 through March 2018 and prescribing specific calendar deadlines for each month as listed in the Table. Corresponding extensions for furnishing related details or returns will be notified subsequently in the Official Gazette.

Commencement of E-Way Bill Rules appointed, triggering operation of specified notification provisions on appointed date.
Designates 1st day of February, 2018 as the date on which the provisions numbered 9 and 10 of notification (4-D/2017) published in the Karnataka Gazette shall come into force, exercised under section 164 of the Karnataka Goods and Services Tax Act, 2017, thereby bringing those specified E-Way Bill Rule provisions into operation.

Commencement of specified GST provisions: serial items nine and ten to take effect from the appointed commencement date.
The government appoints the 1st day of February, 2018 as the date on which the provisions at serial numbers 9 and 10 of notification No. FD 47 CSL 2017 (4-D/2017), dated 30th August, 2017, shall come into force, exercising the statutory power under the Karnataka Goods and Services Tax Act, 2017.

Late fee waiver for failure to file GSTR-4 returns: excess daily fees exempted with lower threshold if state tax liability nil.
The Government of Karnataka waives the portion of late fee payable under section 47 for failure to furnish FORM GSTR-4 by the due date that exceeds the prescribed per day amount; a lower per day waiver threshold applies where the return reports nil total State tax payable.

Composition tax rates amended, specifying differential rates for manufacturers, certain suppliers and others; effective retrospectively.
The amendment replaces the previous reference to an amount calculated under the Ordinance with an explicit composition rate structure: one per cent. of turnover in State for manufacturers, two and a half per cent. for persons making supplies under clause (b) of paragraph 6 of Schedule II, and half per cent. for other suppliers. The notification deems this amendment to have been in force from 25th June, 2017.

Refund of input tax credit: revised formula and eligibility conditions for zero-rated supplies and export-related claims.
Amendments revise registration, refund and form procedures under the West Bengal GST Rules. The Central UIN is deemed granted under the State Act; registration amendments cannot be backdated except by Commissioner's written order. Rule 89 prescribes a formula for refund of input tax credit for zero-rated supplies, with defined terms and separate provisions (4A, 4B) for refunds where suppliers availed specified notifications. Quarterly refund filing in FORM GST RFD-10 with GSTR-11 is mandated for certain applicants, and multiple registration and refund forms are substituted or amended.

Effective date appointment for specific state GST notification provisions under section 164 designates commencement timing.
The Governor, under Section 164 of the West Bengal Goods and Services Tax Act, 2017, appoints an effective date for the commencement of serial numbers 2(viii) and 2(ix) of Notification No. 1568-F.T. dated 30th August, 2017, as recorded in a Finance Department notification that formally fixes the timing for those provisions to come into force.

Late fee waiver for GSTR-4 delays caps payable late fees to a minimal daily amount based on tax liability.
The notification waives late fee amounts for failure to furnish FORM GSTR-4 by the due date to the extent such fees exceed a prescribed minimal daily sum; a reduced minimal daily sum applies when the return shows nil State tax payable, thus capping the enforceable daily late fee for registered persons based on return tax liability.

Extension of time for furnishing GSTR-1: quarterly filing deadlines extended for registered small taxpayers under turnover threshold.
Extension of time is provided for furnishing details of outward supplies in FORM GSTR-1 by registered persons with aggregate turnover upto 1.5 crore. The notification supersedes an earlier notification and prescribes quarterly filing deadlines: July-September, 2017 by 10th January, 2018; October-December, 2017 by 15th February, 2018; and January-March, 2018 by 30th April, 2018. The special procedure and related extensions for furnishing details and returns will be notified in the Official Gazette.

Quarterly GSTR-1 filing extension for small taxpayers grants extra time and a special filing procedure to submit outward-supply details.
Registered persons whose aggregate turnover does not exceed the notified threshold are required to follow a special procedure for furnishing outward-supply details in FORM GSTR-1; the notification supersedes an earlier one and prescribes extended final dates for quarterly GSTR-1 submission, with the special procedure and extensions to be formally notified in the Official Gazette under the applicable return-filing provisions.

Commencement date set for specified GST notification provisions to come into force under state GST law.
The Government, under the Manipur Goods and Services Tax Act, appoints the first day of February, 2018 as the date on which the provisions at serial numbers 2(ii) and 2(iii) of notification No. 5/10/2017-FD(TAX) dated 6th September, 2017 shall come into force, thereby formally commencing those specified notification provisions under the State GST framework.

Extension of GSTR-1 filing deadline for large taxpayers through notification; staggered monthly due dates announced.
Extends the time limit for furnishing details of outward supplies in FORM GSTR-1 for specified registered persons exceeding the aggregate turnover threshold, superseding an earlier notification and prescribing staggered due dates: July-November 2017 (10 January 2018), December 2017 (10 February 2018), January 2018 (10 March 2018), February 2018 (10 April 2018) and March 2018 (10 May 2018); extensions for related return filings will be notified later.

Zero-rated supplies and deemed exports: amended GST forms require invoice-level statements and declarations for refund claims.
Amendments replace GSTR-1 Table 6 to require separate reporting of exports, SEZ supplies and deemed exports with tax-component columns; expand RFD-01/RFD-01A wording to include suppliers or recipients of deemed export supplies; and insert standardized declarations and an undertaking tied to Statement 5B for deemed export refund claims plus Statement 1A for refunds of ITC accumulated due to inverted tax structure, each requiring invoice-level tax detail.

Extension of GSTR-1 due dates for high-turnover taxpayers imposes staggered monthly filing deadlines and supersedes earlier notice.
Extension requires taxpayers above the specified turnover threshold to furnish FORM GSTR-1 on a staggered schedule: July-November deferred to the tenth of January, December deferred to the tenth of February, and each month through March deferred to the tenth of the following respective month; the notification is issued under state GST statutory powers and supersedes an earlier departmental notification.

Late fee waiver for delayed GSTR-3B returns: registered persons relieved of late fee for the specified return period.
The notification waives the late fee payable by registered persons who failed to furnish FORM GSTR-3B for the month of July, 2017 by the due date, invoking statutory powers under the Goods and Services Tax legislation and applying retrospectively from the stated effective date to extinguish the late fee liability for that return period.

Extension of notification operation until amended procedural rules are formally brought into force, preserving existing timelines.
The State has extended the operation of an earlier notification, keeping that notification operative until the amended procedural Rules 138 to 138D come into force by subsequent government notification, invoking its statutory authority to preserve the existing regulatory position pending formal commencement of the amended rules.