# Custom software cost calculator: scope your business system

> Custom software cost is driven by the number of modules and user roles, the complexity of business rules and approvals, integrations with existing systems, data migration, reporting, and security or compliance needs. Starting with the workflow that costs your team the most time keeps the first release focused. Describe your system below and Infikey replies with a scoped estimate and delivery plan.

- Interactive version: https://infikeytechnologies.com/tools/custom-software-cost-calculator
- Type: free estimate request (no automated price; an Infikey engineer replies)
- Category: Development cost
- Last reviewed: 2026-10-05
- Publisher: Infikey Technologies (https://infikeytechnologies.com)

## Options on the estimate form

- **What are you building?** (required): CRM / sales system, ERP / operations, Customer or partner portal, Workflow & approvals tool, Inventory / warehouse, HR / payroll / attendance, Reporting & dashboards, Replace a legacy system, Something else
- **Number of users**: Under 10, 10–100, 100–1,000, More than 1,000
- **User roles**: One type of user, 2–4 roles, 5 or more roles
- **Modules**: Logins, roles & permissions, Approval workflows, Documents & file storage, Invoicing & billing, Stock & inventory, Scheduling & calendars, Email / SMS / WhatsApp notifications, Reports & dashboards, Audit trail, Mobile app for field staff, AI features (search, extraction, assistants)
- **Systems to connect**: Accounting (Tally, Zoho, QuickBooks, Xero), ERP (SAP, Oracle, Dynamics), CRM (Salesforce, HubSpot), Payment gateway, Single sign-on (Google, Microsoft), Government APIs (GST, e-invoicing), Other APIs
- **Existing data to migrate?**: No, Spreadsheets, From an existing system
- **Hosting**: Cloud (AWS, Azure, GCP), On our own servers, Recommend one
- **Compliance needs**: GDPR / UK GDPR, India DPDP Act, HIPAA, SOC 2 / ISO 27001 controls
- **Target go-live**: As soon as possible, Within 3 months, 3–6 months, Flexible
- **Budget in mind (optional)**

Request an estimate: https://infikeytechnologies.com/tools/custom-software-cost-calculator?system_type=workflow&users=10_100&roles=2_4&data_migration=spreadsheets&hosting=cloud&timeline=flexible#estimate

## Pre-fill the form from a link

Add these query parameters to https://infikeytechnologies.com/tools/custom-software-cost-calculator (pre-filled page), https://infikeytechnologies.com/tools/custom-software-cost-calculator.md (this plain-text page) or https://infikeytechnologies.com/api/tools/custom-software-cost-calculator (JSON).

| Parameter | Meaning | Accepted values |
| --- | --- | --- |
| `system_type` | What are you building? | one of crm, erp, portal, workflow, inventory, hr, reporting, replace_legacy, other |
| `users` | Number of users | one of under_10, 10_100, 100_1k, over_1k |
| `roles` | User roles | one of 1, 2_4, 5_plus |
| `modules` | Modules | comma-separated list of auth, approvals, documents, billing, inventory, scheduling, notifications, reports, audit, mobile, ai |
| `integrations` | Systems to connect | comma-separated list of accounting, erp, crm, payments, sso, government, other_api |
| `data_migration` | Existing data to migrate? | one of none, spreadsheets, legacy |
| `hosting` | Hosting | one of cloud, on_premise, recommend |
| `compliance` | Compliance needs | comma-separated list of gdpr, dpdp, hipaa, soc2 |
| `timeline` | Target go-live | one of asap, 3_months, 6_months, flexible |
| `budget` | Budget in mind (optional) | free text |

- Sales CRM: https://infikeytechnologies.com/tools/custom-software-cost-calculator?system_type=crm&users=10_100&roles=2_4&modules=auth%2Cnotifications%2Creports&integrations=accounting&data_migration=spreadsheets&hosting=cloud&timeline=flexible
- Customer portal: https://infikeytechnologies.com/tools/custom-software-cost-calculator?system_type=portal&users=100_1k&roles=2_4&modules=auth%2Cdocuments%2Cbilling%2Cnotifications&integrations=payments%2Cerp&data_migration=spreadsheets&hosting=cloud&timeline=flexible
- Replace legacy ERP: https://infikeytechnologies.com/tools/custom-software-cost-calculator?system_type=replace_legacy&users=100_1k&roles=5_plus&modules=auth%2Capprovals%2Cinventory%2Cbilling%2Creports%2Caudit&data_migration=legacy&hosting=cloud&timeline=flexible

## What drives custom software cost

| Factor | Why it matters |
| --- | --- |
| Business rules | Approvals, exceptions and calculations take more effort than screens. |
| Roles & permissions | Each role sees and does different things, which multiplies testing. |
| Integrations | Depend on the quality of the other system’s API and documentation. |
| Data migration | Cleaning and mapping old data is often the riskiest part of the project. |
| Reporting | Accurate dashboards need a well-designed data model from the start. |
| Compliance | Audit trails, encryption, access reviews and hosting location. |

## Custom software or an off-the-shelf product?

Off-the-shelf tools win when your process is standard. Custom software pays off when the process is your competitive advantage, when per-seat licences get expensive at scale, or when you need several tools to work as one.

Compare total cost over three to five years, including licences, customisation and the time staff lose working around a tool that does not fit. The build vs buy calculator does exactly that.

## How to keep the first release focused

1. List the workflows and measure how much time or money each costs today.
2. Build the most expensive workflow end to end first.
3. Migrate only the data the first release needs.
4. Put it in front of real users, then plan release two from their feedback.

## FAQ

### How much does custom software cost?

It depends on modules, roles, business rules, integrations, data migration and compliance. Describe your system on this page and Infikey replies with an estimate for your scope.

### How long does custom software take to build?

A focused first release often takes a few months; larger systems are delivered in phases. The project timeline estimator shows how phases add up.

### Who owns the source code?

With Infikey you own the source code and intellectual property for custom work once the project is paid for, as set out in the proposal.

### Can custom software connect to Tally, SAP or our CRM?

Usually yes, through APIs, connectors or scheduled file exchange. Tick the systems you use and we will confirm the best method.

### What does custom software cost to run after launch?

Hosting, monitoring, backups, security updates and small improvements — commonly budgeted as a yearly percentage of the build. See the software maintenance cost calculator.

## Get expert help

Infikey Technologies replies to every estimate request with a scoped, costed plan: https://infikeytechnologies.com/tools/custom-software-cost-calculator#estimate

More free calculators: https://infikeytechnologies.com/tools.md

## Disclaimer

This form only collects your requirements so Infikey can prepare an estimate. It does not produce a price, quote or offer, and any estimate we send is indicative until agreed in a signed proposal. Nothing on this page is financial, legal, tax, investment or other professional advice. Infikey Technologies Private Limited, Infikey Technologies LLC and their directors, employees and affiliates make no warranty, express or implied, about the accuracy, completeness or suitability of this tool or its results, and accept no liability for any loss or damage, direct or indirect, arising from its use or from reliance on its results. Verify all figures independently and seek professional advice before making any decision. Use of this tool is at your own risk.