Calculate Refund With Interest Under RERA Section 18
Statutory Summary (Section 18 RERA & SBI MCLR + 2% Mandate)
Under Section 18(1) and Section 2(za) of the Real Estate (Regulation and Development) Act, 2016, a builder who misses the Agreement for Sale possession date must refund 100% of your payments with simple interest at SBI's highest MCLR plus 2% (currently 10.95% p.a.) from each instalment date within 45–60 days.
10.95% p.a.
SBI 3-Yr MCLR (8.95%) + 2%
100% Refund
Unqualified Right (Newtech SC)
45–60 Days
Statutory Builder Payout Window
Sec 40(1) RC
Arrears of Land Revenue Recovery
Interactive RERA Section 18 Refund & Delay Interest Calculator
Select your state RERA rule, adjust the SBI highest MCLR rate if needed, and enter each payment instalment with its receipt date to generate an itemised claim schedule.
RERA Refund & Delay Interest Step Wizard (SBI MCLR + 2%)
Step 1: Choose Section 18 Remedy, State RERA Rule & Key Dates
Under Section 18(1) of RERA 2016, a homebuyer facing delayed possession has two distinct statutory choices: withdraw completely for a full refund with interest from each payment date, or stay in the project and claim monthly delay interest from the promised handover date.
Statutory Citation: Rule 18 MahaRERA / Rule 15 HRERA / Central RERA Model Rules — Most State Real Estate (Regulation and Development) Rules prescribe simple interest at SBI's highest Marginal Cost of Funds-based Lending Rate (MCLR) plus 2% per annum.
8.95% (3-Yr Tenor as of Oct/Nov 2026, SBI MCLR)
+2.00% under Model RERA Rules (+1.00% in UP RERA)
Handover date in Builder-Buyer Agreement (BBA)
Date up to which interest is computed
How to Interpret Your Result & State-Wise RERA Interest Rules (MCLR + 2% vs +1%)
Your legal remedy, interest start date, and filing forum depend on whether you want to exit the stalled project completely or retain the apartment with monthly delay compensation:
| State / Forum Authority | Statutory Interest Formula | Effective Rate (Nov 2026) | Payout Window & Next Action |
|---|---|---|---|
| Maharashtra (MahaRERA), Karnataka (KRERA), Tamil Nadu (TNRERA), Gujarat | SBI Highest MCLR + 2% (Rule 18) | 10.95% p.a. Simple | 45 days from demand; serve Section 18 notice then file online RERA complaint. |
| Haryana (HRERA Gurugram & Panchkula) & Rajasthan (R-RERA) | SBI Highest MCLR + 2% (Rule 15) | 10.95% p.a. Simple | 60 days (Haryana) / 45 days (Rajasthan); execute via Section 40 RC if unpaid. |
| Uttar Pradesh (UP RERA — Noida, Greater Noida, Lucknow) | SBI MCLR + 1% (UP Rules) | 9.95% p.a. Simple | 45 days from order; District Magistrate recovers via e-RC attachment. |
| Consumer Commissions (e-Jagriti — District / State / NCDRC) | Experion Developers SC Standard | 9.00% p.a. + Damages | Best when claiming additional mental agony compensation and litigation costs. |
| Carpet Area Shortfall (>3% Reduction on Handover) | Section 14(2) & BBA Clause | Pro-Rata + 10.95% Interest | Builder must refund excess per-sq.-ft. price within 45 days with MCLR + 2%. |
Cancelling a booking before possession delay? Check our builder booking cancellation refund legal notice guide and flat booking cancellation letter format.
Method & Legal Basis: How Section 18 RERA Interest Is Computed Per Instalment
Under Section 18(1) of RERA 2016, if a promoter fails to give possession of an apartment, plot, or building in accordance with the terms of the Agreement for Sale by the specified date, the allottee's right to claim a refund with interest is absolute. Unlike MSME invoices where interest compounds monthly, State RERA rules mandate simple interest calculated separately on each payment tranche from the date the builder received that tranche:
Effective_Rate = SBI_Highest_MCLR + 2.00% (or +1.00% under UP RERA)
Instalment_Interest(i) = Amount_Paid(i) × (Effective_Rate / 100) × (Days_Elapsed(i) / 365)
Total_Section_18_Claim = Σ Amount_Paid(i) + Σ Instalment_Interest(i)
Excel Formula for Homebuyers: If cell B2 is the Instalment Amount, C2 is the Payment Date, D2 is the Refund Cut-Off Date, and E2 is the annual rate (0.1095), enter =B2 * E2 * ((D2 - C2) / 365).
Unqualified Right to Exit & Refund
In M/s Newtech Promoters and Developers Pvt. Ltd. v. State of U.P., (2021) 18 SCC 1, a 3-Judge Supreme Court Bench held that once the promised handover date passes, the allottee has an unconditional statutory right under Section 18(1) to demand a full refund with interest.
Interest Runs From Each Deposit Date
In Experion Developers Pvt. Ltd. v. Sushma Ashok Shiroor, (2022) 15 SCC 286, the Supreme Court ruled that refund interest is both restitutionary and compensatory, and must be calculated from the date each respective instalment was deposited—not merely from the date of default.
RERA vs Consumer Court Choice
In Imperia Structures Ltd. v. Anil Patni, (2020) 10 SCC 783, the Supreme Court held that Section 79 of RERA does not bar homebuyers from approaching Consumer Commissions on e-Jagriti as an alternative to State RERA.
Statutory Recovery Flowchart: From Possession Default to Section 40 Attachment
Follow this 5-stage legal escalation hierarchy to convert your calculated Section 18 interest schedule into an enforceable bank credit:
Builder Defences & Section 18 Edge Cases: How Courts Rule
Builders routinely cite technical contract clauses to deny or reduce MCLR + 2% interest. Here is how RERA Tribunals and the Supreme Court deal with each edge case:
1. Builder Claims Force Majeure, NGT Construction Ban, or Approval Delay▼
Routine delays in obtaining fire NOCs, environmental clearances, or Occupancy Certificates are the promoter's sole statutory risk under Section 11(4) of RERA. Only officially notified Section 6 COVID-19 moratoria (typically 6 months in 2020) or specific court-verified NGT stop-work days can be excluded from the delay period; they never extinguish your right to exit with full principal and interest.
2. Tripartite Subvention Scheme: Builder Stopped Paying Pre-EMIs to the Bank▼
When a builder defaults on subvention Pre-EMIs under a tripartite agreement, allottees are entitled to claim both the own-contribution booking money AND the entire bank loan principal plus Pre-EMI interest debited from their account, with SBI MCLR + 2% interest running from each disbursement date.
3. Buyer Cancels Before Possession Deadline — 10% Earnest Money Forfeiture Cap▼
If the builder has not defaulted on the possession timeline and the allottee cancels for personal reasons, the builder cannot forfeit 100% of the paid amount. Under Model RERA Agreement for Sale clauses and NCDRC rulings (DLF Ltd. v. Bhagwanti Narula), forfeiture is capped at a maximum of 10% of the basic sale price (or booking token if no BBA was signed), and the balance must be refunded within 45 days. See our token & bayana money refund rules guide.
4. Plotted Developments & Carpet Area Shortfall Refunds▼
Section 18 applies equally to residential plots where internal development works are incomplete. Similarly, if the final RERA carpet area on possession is smaller than promised in the Agreement for Sale, the builder must refund the pro-rata excess consideration with SBI MCLR + 2% interest within 45 days. Read our guides on plot booking refund legal notices and carpet area shortfall refunds.
Worked Case Study: Homebuyer Computes & Recovers ₹45,00,000 Principal + ₹19,14,144 RERA Interest
The Facts: Siddharth & Meera Nair booked a 3BHK apartment in Sector 106, Gurugram, paying ₹45,00,000 across four instalments between March 2022 and August 2023. The registered Builder-Buyer Agreement promised possession by 31 March 2025. By November 2026, tower finishing remained stalled without an Occupancy Certificate.
The Section 18(1)(a) Calculation (Cut-Off Date: 4 Nov 2026 @ 10.95% p.a.):
• Instalment 1 (15 Mar 2022 — ₹5,00,000): 1,695 days × 10.95% = ₹2,54,250 interest.
• Instalment 2 (10 Jul 2022 — ₹15,00,000): 1,578 days × 10.95% = ₹7,10,100 interest.
• Instalment 3 (20 Jan 2023 — ₹12,50,000): 1,384 days × 10.95% = ₹5,19,000 interest.
• Instalment 4 (05 Aug 2023 — ₹12,50,000): 1,187 days × 10.95% = ₹4,45,125 interest.
Homebuyer Evidence Checklist: 6 Documents Needed for a Section 18 Claim
Keep these six primary records ready under Section 63 of the Bharatiya Sakshya Adhiniyam, 2023 before serving a legal notice to the builder for delayed possession refund (see transparent legal notice charges):
Proving the promised possession date, grace period clause, and allotted unit carpet area.
Every receipt issued by the developer along with the consolidated applicant statement of account.
Showing exact NEFT/RTGS/cheque clearance dates from which Section 18 interest starts running.
Screenshot from the State RERA portal showing lapsed completion dates and missing OC.
Downloaded from our calculator above, detailing per-instalment days and SBI MCLR + 2% math.
Dated photos of incomplete construction and email trail with the builder's CRM desk.
Frequently Asked Questions: RERA Refund Interest Calculator & Section 18
Direct Answers Grounded in RERA 2016, State MCLR Rules, and Supreme Court Judgments
What is the current RERA interest rate on refund under Section 18?↓
Does RERA refund interest run from each payment date or from the promised possession date?↓
Can a builder pay ₹5 per sq. ft. as delay compensation instead of the RERA SBI MCLR + 2% rate?↓
Within how many days must a builder pay the calculated refund and interest under RERA?↓
Is my right to a RERA Section 18 refund affected if the builder claims Force Majeure or NGT bans?↓
What happens if the builder ignores the RERA refund and interest order?↓
Builder flat possession late kare ya refund na de toh RERA interest ke saath paisa wapas kaise le?↓
Primary Statutes, Supreme Court Judgments & Official MCLR Sources
- Real Estate (Regulation and Development) Act, 2016 (Act No. 16 of 2016) — Section 2(za), Section 18, Section 31 & Section 40
- Supreme Court of India — M/s Newtech Promoters and Developers Pvt. Ltd. v. State of U.P. & Ors., (2021) 18 SCC 1 (3-Judge Bench)
- Supreme Court of India — Experion Developers Pvt. Ltd. v. Sushma Ashok Shiroor, (2022) 15 SCC 286 (Interest From Each Payment Date)
- Supreme Court of India — Imperia Structures Ltd. v. Anil Patni & Anr., (2020) 10 SCC 783 (Concurrent RERA & CPA Remedies)
- State Bank of India (SBI) — Marginal Cost of Funds-Based Lending Rate (MCLR) Official Schedule
- Bharatiya Sakshya Adhiniyam, 2023 (Section 63 — Electronic Payment Receipts, Demand Letters & RERA Portal Extracts)
Statutory verification note: LegalRecovery drafts and serves pre-litigation Section 18 demand notices and assists with RERA / e-Jagriti filings; physical execution of Recovery Certificates is carried out by the District Collector under Section 40(1). Checked against SBI MCLR rates and RERA provisions as of November 2026.
Serve a Section 18 Builder Refund Legal Notice
Builder Delaying Handover or Forfeiting Booking Money? Demand Full Refund + SBI MCLR Interest
Attach your itemised Section 18 interest schedule to a formal advocate legal notice served on the promoter's directors and registered office. Our real-estate recovery advocates cite Newtech Promoters (SC 2021), state MCLR + 2% rules, and Section 40 land-revenue attachment provisions—dispatched via Registered Speed Post and Section 63 BSA electronic mail.
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Plot Booking Cancelled but No Refund? Recovering Your Money
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Flat Booking Cancellation Letter Format (Before Agreement)
4 flat and plot booking cancellation letter formats (polite, firm RERA anti-forfeiture, final ultimatum & Sec 18 delay) with Word export.
RERA Complaint Online: State-Wise Process, Fees & Format
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Subvention Scheme Gone Wrong: Builder Defaulted on Pre-EMIs
Tripartite agreement rights, RBI upfront-disbursal violation shield, CIBIL protection & RERA Section 18 refund when a builder stops paying Pre-EMIs.