East India · India
Custom PHP and MySQL application development in Kolkata
When an off-the-shelf plugin does not fit the business, I build the thing that does — booking systems, client portals, quote calculators, admin dashboards, and integrations with whatever API you already depend on. For Kolkata businesses, quoted in INR from $200, typically live in 10 days.
What custom php and mysql application development includes for a Kolkata business
Fixed scope, agreed in writing before development starts. From $200, typically live in 10 days.
- Database design and schema, documented rather than improvised
- Application build in PHP with a MySQL backend
- Admin interface built for the people who will use it daily
- Role-based access control where more than one person logs in
- Third-party REST API integrations
- Transactional email via PHPMailer with proper SPF/DKIM alignment
- Input validation, prepared statements and CSRF protection throughout
- Written handover documentation — you are not dependent on me to keep it running
The terms for a Indian client
| Starting price | From $200, quoted and invoiced in INR |
|---|---|
| Typical timeline | 10 days once content is supplied |
| Tax position | GST at 18% on your sales; my invoices are imported services under reverse charge |
| Data protection | the Digital Personal Data Protection Act 2023 — resolved by the DPDP Act permits transfers except to notified countries, and the DPA records the basis |
| Payment rails available | Razorpay, PayU, Cashfree, and UPI — which now carries the majority of domestic transaction volume |
| My day in Kolkata time | 09:30–18:30 — about 8.5 hours of overlap |
Why this matters for India specifically
UPI changes the entire checkout design. An Indian store built around card fields first and UPI as an afterthought converts far worse than one built the other way round, and that is a layout decision, not a plugin.
How a Kolkata build is scoped before anything is written
Scope is fixed in writing before development starts, and the number in that document is the number on the invoice. For Kolkata projects that document lists every page, every form, every integration and every third-party account the site will touch — priced in INR, not converted at the end from something else.
The reason this matters more than it sounds: almost every dispute in web development is a scope dispute wearing a different hat. "Can you just add" is how a three-day build becomes a three-week one. Fixing scope up front does not stop you changing your mind; it makes the cost of changing your mind visible before you commit to it, which is the only honest way to run a fixed price.
Professional services in Kolkata
Accountants, solicitors, consultants and agencies sell judgement, which cannot be photographed. What converts instead is specificity: the sectors you actually work in, the size of client you actually serve, and named people with real biographies. A professional services site full of stock imagery and the word "bespoke" is indistinguishable from every competitor in Kolkata.
Practically, the site's job is qualification rather than lead volume. Publishing your minimum engagement size loses you enquiries and saves you hours, and almost every practice I have built for concluded afterwards that it should have done it sooner.
Analytics that has never once been looked at
Most sites carry a tracking tag and no measurement. Nobody defined what counts as a conversion, so the dashboard reports sessions and bounce rate — numbers that move up and down and change no decision anybody makes.
Useful measurement is narrow: form submissions, phone taps, WhatsApp clicks, and which pages preceded them. Four numbers checked monthly beat forty never opened, and knowing which Kolkata search terms actually produce enquiries is what turns the site from a cost into something you can steer.
What I am not claiming about Kolkata
- I have no office, postal address or phone number in Kolkata
- I cannot meet you in person, and if that is a requirement you should hire locally
- I am not claiming existing clients in Kolkata specifically — my live work is listed on the work page and you can check it
- Nothing on this page is a guarantee of search rankings, which no developer can honestly offer
Custom PHP and MySQL application development in Kolkata — common questions
- Can you migrate my Kolkata site without losing rankings?
- Yes, and the redirect map is the whole job. Every existing URL is mapped to its new equivalent with a 301 before launch, and anything with no equivalent goes to the closest relevant page rather than the homepage. Sites lose rankings in migration because that mapping was skipped, not because migration is inherently risky.
- Do I need to provide the content and images?
- Content, yes — you know your business and I do not. I will restructure and edit what you send so it reads for the web, and I will tell you where a section is missing. Photography is worth paying a local photographer for; stock images of people in offices are recognisable as stock and quietly cost you credibility.
- Do you actually work with businesses in Kolkata?
- Yes, remotely. I work with Indian clients from Islamabad, quoting in INR and invoicing in INR. I have no office, address or phone number in Kolkata and will not pretend otherwise. If your project needs someone physically present, hire locally — I will say so in the first reply rather than after a deposit.
- How much does a website cost in Kolkata?
- A business website starts from ₹6,600 and goes live in about three days. An e-commerce build starts from ₹12,000 in around seven days, and a custom application from ₹17,000 in ten. Those are starting figures — the exact number is fixed in writing once scope is agreed, and it does not move after that.
- What currency will I be invoiced in?
- INR. Quotes, milestones and the final invoice are all written in INR so you are never comparing a converted figure against a local supplier's. Regarding tax: GST at 18% on your sales; my invoices are imported services under reverse charge.
- Who owns the website when it is finished?
- You do, completely. The domain is registered in your name, hosting sits in your account, the code lives in a repository you control, and any payment provider account is opened in your business name. Credentials are handed to you as they are created rather than at the end, so you are never locked out of your own site.
- How do you handle our customers' data under Digital Personal Data Protection Act 2023?
- Your customer data is governed by the Digital Personal Data Protection Act 2023, and sending it to a developer in Pakistan is a restricted transfer. That is resolved by the DPDP Act permits transfers except to notified countries, and the DPA records the basis, published on this site and pre-signed before you send an enquiry — not drafted after you ask about it.
Related pages
Other services in Kolkata
Custom PHP and MySQL application development in nearby East India towns
- Custom PHP and MySQL application development Bhubaneswar
- Custom PHP and MySQL application development Guwahati
- Custom PHP and MySQL application development Cuttack
The full service detail — process, deliverables, what is excluded and the FAQ — is on the main custom php and mysql application development page. Everything I build for Kolkata is on the Kolkata page, and every town in India is on the India coverage page.
Custom PHP and MySQL application development in Kolkata — get a fixed quote
Send the brief and you get a reply within one business day, priced in INR from $200. If custom php and mysql application development is not what your project actually needs, I will say so.
- Response
- Replies within 1 business day
- Hours
- Mon–Fri, 09:00–18:00 PKT — overlaps 05:00–14:00 UK, 00:00–09:00 US Eastern
- Booking
- Booking projects from October 2026