Custom software build Retainer Agreement template
A ready-to-send retainer agreement for software development work. Everything below is fully editable — client name, dates and totals become live variables, every priced item turns into an interactive block your client can accept, e-sign and pay in one link. GST, UPI and Razorpay built in.
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Engineering · Retainer Agreement
Custom software build
for Acme Industries
Reliable software shipped in small, tested increments.
Prepared by Your Studio · 1 August 2026 · Valid until 31 August 2026
2 wk Sprints | CI/CD From day 1 | 99.9% Uptime target |
Dear Acme Industries, this retainer gives your team dedicated, predictable capacity for ongoing Custom software build — billed monthly, no hiring required.
What's included each month
- Architecture & plan
- Sprint demos
- Test suite + CI
- Production release
- Monthly review call and a written progress report
- Response within 1 business day (SLA)
Investment
| Item | Amount |
|---|---|
| Discovery & planning | ₹1,20,000 |
| Custom software build — core delivery | ₹3,00,000 |
| Reviews, QA & launch | ₹90,000 |
| Handover, documentation & 30-day support | ₹90,000 |
| Total (incl. 18% GST) / month | ₹6,00,000 / month |
Billed monthly in advance. Pause or cancel with 30 days' notice. Prices include 18% GST.
Why Your Studio
Ship weekly Working software every sprint — you're never in the dark. | Tested by default Automated coverage so changes don't break what worked. | You own it Clean code, docs and infra handed over — no lock-in. |
Terms
- Billed monthly in advance; GST invoice issued on payment.
- Unused capacity doesn't roll over; scope can be rebalanced each month.
- Either party may end the retainer with 30 days' notice.
Next steps
- Review this retainer and leave any questions as comments right on this page — we reply the same day.
- Accept and e-sign below (legally valid under the IT Act, 2000).
- Pay the deposit from this page — UPI, cards and netbanking are supported.
- We schedule kick-off within 2 business days.
Prepared by Your Studio · 1 August 2026
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