Quick answer: In India, use instalment (one ‘l’) because India follows British English spelling conventions. While both spellings mean the same thing—a payment made in parts—instalment is the standard form used in Indian legal documents, banking, and business communications.
If you’re drafting a loan agreement, writing an email to your bank, or preparing a business proposal in India, you’ve probably paused over this spelling question. The confusion is understandable because both versions appear online, and American content often uses the double-‘l’ variant. Let me clear this up once and for all based on years of editing documents for Indian businesses and financial institutions.
| Term | Meaning / When to use | Example sentence |
|---|---|---|
| Instalment | British English spelling; use in India, UK, Australia, and other Commonwealth countries for payments made in parts | “The car loan will be repaid in 60 monthly instalments of ₹15,000 each.” |
| Installment | American English spelling; use only when writing for US audiences or American publications | “The US mortgage requires a down payment plus 360 monthly installments.” |
When to use instalment
Use instalment (with one ‘l’) whenever you’re writing in India or for any British English context. This is the spelling you’ll find in Indian banking documents, loan agreements, insurance policies, and legal contracts. The Reserve Bank of India, major banks like HDFC and ICICI, and all formal financial communications use this spelling consistently.
Here’s how I’ve seen it used correctly in real Indian contexts:
- Bank email: “Your EMI instalment of ₹22,500 is due on 5th November. Please ensure sufficient balance in your linked account.”
- Loan agreement clause: “The Borrower shall repay the principal amount along with interest in 48 equal monthly instalments commencing from 1st January 2025.”
- Insurance policy document: “Premium can be paid annually, half-yearly, quarterly, or in monthly instalments as per the policyholder’s choice.”
I’ve corrected this spelling countless times in cover letters where job applicants wrote “installment plan” when applying to Indian companies. That double-‘l’ immediately signals American influence and looks out of place in formal Indian business writing. According to Wikipedia’s entry on Instalment, this spelling is standard across British English territories, which includes India.
The rule is straightforward: if your document will be read in India, use instalment. This applies to:
- Loan repayment schedules
- EMI calculations
- Investment SIP descriptions
- Legal contracts mentioning payment terms
- Business invoices with staggered payments
- Real estate payment plans
When to use installment
Reserve installment (with two ‘l’s) exclusively for American English contexts. You’ll encounter this spelling in US banking websites, American financial news, and documents from US-based companies. If you’re writing for an American audience, applying to a US university, or corresponding with a US client, this is the correct form.
Here are realistic examples where the American spelling is appropriate:
- US bank statement: “Your installment payment of $450.00 was processed on October 15.”
- American job offer letter: “The signing bonus will be paid in three installments over the first quarter of employment.”
- US e-commerce checkout: “Pay in 4 interest-free installments of $62.50 with Klarna.”
I once reviewed a resume for an Indian software engineer applying to Silicon Valley startups. He had written “managed instalment-based payment integration” throughout his experience section. I changed every instance to “installment” because American hiring managers and ATS systems expect that spelling. Using the British variant in a US job application creates unnecessary friction.
Use installment when:
- Writing for American publications or websites
- Communicating with US-based clients or employers
- Preparing documents for US visa or immigration purposes
- Creating content targeting American consumers
- Working on projects for US companies, even if you’re based in India
The key is audience awareness. If you’re an Indian freelancer working on a project for a New York-based fintech startup, use installment in all deliverables. But if that same startup opens a Bangalore office and you’re writing internal documentation for the Indian team, switch to instalment.
How to remember the difference
Here’s the memory trick I teach every junior editor: India = Instalment. Both words start with “In” and both use a single ‘l’. This simple association works because India follows British English conventions, just like the UK itself.
Another approach: count the letters in “London” (6 letters) and “instalment” has one ‘l’. Count the letters in “Los Angeles” (11 letters, but think of it as the longer American name) and “installment” has two ‘l’s. It’s not perfect, but it helps visual learners.
My favorite method is thinking about the word “skill.” In British English, when you add “-ing” you get “skilling” (one ‘l’ stays). American English doubles it: “installment” follows the American pattern of doubling consonants, while British English keeps it single: “instalment.”
Here’s a practical test I use: write both spellings down. Which one looks more compact? Instalment. British English tends toward shorter, more economical spellings (colour vs. color, centre vs. center). Instalment fits that pattern. For more, see Installment.
Common mistakes and exceptions
The most frequent error I see is mixing spelling conventions within the same document. An Indian startup’s pitch deck might say “instalment” on one slide and “installment” on the next because different team members edited different sections. This inconsistency looks unprofessional to investors. Pick one convention based on your primary audience and stick with it throughout.
Another common mistake: assuming that because software or apps use American spelling by default, you should too. Many Indian professionals use tools like Google Docs, Microsoft Word, or Grammarly set to US English, which auto-corrects “instalment” to “installment.” I’ve seen this happen in formal legal agreements where the lawyer didn’t notice the spell-checker had Americanized the entire document. Always verify your spell-check settings match your target audience.
Here’s a real example from my editing work: a Mumbai-based edtech company sent me their investor update. The financial section read “revenue collected in monthly installments” (American spelling), but the rest of the document used British spellings like “programme” and “centre.” The founder had copied text from a Stripe integration guide (American) without adjusting the spelling. I changed it to “instalments” to match the document’s overall British English convention.
Exception for brand names: If you’re quoting an American company’s official payment plan name, keep their spelling. For example, “Affirm offers 12-month installment plans” (that’s their branded term). But when describing your own payment terms in India, write “We offer 12-month instalment plans.”
Exception for international legal documents: Some cross-border contracts use both spellings or specify “installment (US) / instalment (UK)” on first mention to avoid ambiguity. This is smart drafting when parties are from different jurisdictions.
One edge case: the verb form. In British English, you “pay by instalment” or “make instalment payments.” The verb “to instal” (British) means to install equipment, not to pay in parts. Don’t confuse “instalment” (payment) with “instal” (to set up). American English has the same distinction: “installment” (payment) vs. “install” (to set up).
Frequently Asked Questions
Which spelling do Indian banks use in loan documents? Indian banks exclusively use “instalment” (one ‘l’) in all official documents, EMI schedules, and customer communications. You’ll see this in HDFC, SBI, ICICI, and every other Indian financial institution’s paperwork.
Is it wrong to use “installment” in India? It’s not grammatically wrong—both spellings are correct English—but it’s stylistically inappropriate for Indian contexts. Using the American spelling in India signals either carelessness or American influence, which can undermine your credibility in formal business or legal writing.
What about EMI—does that change the spelling rule? No. EMI (Equated Monthly Instalment) actually reinforces the British spelling. The “I” in EMI stands for “Instalment” in Indian banking terminology. You’ll never see an Indian bank write “Equated Monthly Installment” in official documents.
Should I use instalment or installment in my Indian startup’s website? If your primary customers are in India, use “instalment” throughout your website, terms of service, and checkout flow. If you’re targeting both Indian and American markets, consider creating region-specific pages or using neutral phrasing like “monthly payments” to avoid the spelling issue entirely.
Samantha Jones graduated with a Bachelor’s degree in English Literature from Oxford University and has been involved in language education for over 15 years. Her expertise lies in comparative language analysis, focusing particularly on the differences and similarities in spelling across various English dialects. Samantha’s passion for this niche developed from her love of storytelling and desire to preserve the subtle differences that make English unique around the globe. On SpellRightDaily, she crafts detailed articles that compare common spelling errors and offer practical advice for writers and editors looking to polish their work. Samantha’s content is known for its clarity and depth, helping readers decode complex spelling issues and improve their writing skills. She also enjoys delving into the psychology of language learning, and how cognitive factors influence the retention of correct spelling patterns. Her engaging writing encourages a deeper appreciation of the language’s rich diversity.