Car Rental & Fleet Management for ERPNext

Key Features

`Rental Reservation` and submittable `Rental Agreement` DocTypes with a naming series, workflow states and full document versioning

Whitelisted availability method running one overlap query across confirmed reservations, open agreements and maintenance blocks — no double booking from concurrent counter sessions

Fleet availability calendar view plus a per-vehicle Gantt of bookings, service windows and off-fleet periods

`Rental Rate Card` with daily, weekly and monthly tiers, seasonal and weekend overrides, and per-customer or corporate-contract pricing

`Vehicle Inspection` for check-out and check-in: damage-point child table with body-panel coordinates, photo attachments, fuel level and odometer capture

Automatic damage and fuel differential charging — check-in inspection diffs against check-out and proposes chargeable lines on the closing invoice

Security deposit lifecycle: hold on check-out, partial or full release on check-in, posted through standard ERPNext Journal Entry / Payment Entry

`Traffic Violation` DocType matching a fine by plate and violation datetime back to the covering agreement, with configurable admin fee and toll recharge lines

`Vehicle Maintenance Schedule` triggering preventive service by odometer threshold or calendar interval, with the vehicle auto-blocked from availability during the window

Scheduler events (`hooks.py` `scheduler_events`) for overdue-return flags, hold expiry, licence and insurance expiry alerts, and maintenance-due generation

Contract, agreement and inspection report print formats built as Jinja templates, ready for signature capture and multi-language output

Frappe REST API and whitelisted endpoints for availability, quote and booking — consumable by your website, WhatsApp bot or an aggregator feed

Role profiles (Rental Agent, Fleet Manager, Rental Accountant) with branch or company user permissions for multi-location fleets

Revenue posted through native ERPNext Sales Order / Sales Invoice so tax, receivables and accounting reports need no parallel ledger

Fleet utilisation, revenue-per-vehicle and damage-recovery reports as Query Reports with Frappe dashboard charts

Built and tested for Frappe/ERPNext v15 and v16, packaged as a standard installable Frappe app in its own git repository

Built to order, done for you

No DIY setup — a working app, built, installed and supported by ECOSIRE.

You order

Start with a one-time build price. We scope it with you at kickoff.

We build & install

ECOSIRE builds, configures and installs it on your ERPNext.

Go live + support

You go live in about 2–4 weeks, with a post-launch support window.

About this Product

A rental desk lives or dies on one question: which car is actually free, for which dates, at which rate. ERPNext ships a Vehicle DocType and a Vehicle Log for odometer and fuel, and it has excellent invoicing, accounting and stock behind it — but it has no reservation object, no overlap check, no rate card by season or duration, no deposit and damage workflow, and no way to push a traffic fine that arrives three weeks after return back onto the right contract. Most rental companies bridge that gap with a spreadsheet for the calendar, a WhatsApp thread for condition photos and a hand-typed Sales Invoice at the end — which is exactly where double bookings, unbilled damage and lost fine recharges come from.

We build a proper Frappe app: its own car_rental module inside your bench, installed as an app, not a pile of Customize Form tweaks on Vehicle. The core DocTypes are Rental Reservation, Rental Agreement (submittable, the contract of record), Rental Rate Card with child rows for daily/weekly/monthly tiers and seasonal overrides, Vehicle Inspection for check-out and check-in with a damage-point child table and image attachments, Traffic Violation for fines and toll recharges, and Vehicle Maintenance Schedule for preventive service by mileage or calendar interval. Availability is answered by a single whitelisted method that runs one overlap query across confirmed reservations, open agreements and maintenance blocks, so the calendar and the booking form never disagree.

Technically it is ordinary, boring Frappe — deliberately, because that is what stays upgradable. Booking rules live in controller validate methods and hooks.py doc events, not in ad-hoc server scripts scattered across a production site. Confirming a reservation and returning a vehicle each go through a whitelisted method that runs inside a transaction and writes the resulting Sales Order or Sales Invoice through the standard ERPNext APIs, so revenue, taxes and receivables land in your existing accounts with no shadow ledger. Client scripts drive the counter experience: a date-range picker that greys out unavailable vehicles, a damage diagram on the inspection form that writes coordinates into the child table, and a one-click "convert reservation to agreement" that carries the rate card, deposit and driver details forward. Scheduler events run nightly to flag overdue returns, raise maintenance due when odometer or date thresholds are crossed, and expire unconfirmed holds. Permissions are shipped as role profiles — Rental Agent, Fleet Manager, Rental Accountant — with user permissions by branch or company so a multi-location operator sees only its own fleet, and the whole thing is exposed over the standard Frappe REST API and whitelisted methods so your website, WhatsApp bot or aggregator feed reads the same availability the counter sees.

Everything is built against Frappe/ERPNext v15 and v16, and we target the exact version on your bench rather than shipping a lowest-common-denominator build. That includes the awkward parts of the domain, negotiated during scoping: deposit hold and release, mileage allowance and excess-kilometre billing, fuel-level differential charging, one-way drop-off fees, driver and licence expiry checks, insurance excess handling, and the fine flow where a Traffic Violation recorded against a plate and a violation date is matched back to whichever agreement covered that moment and recharged with your admin fee on top.

This is build-to-order, not a marketplace download. You request a quotation, we run a scoping call, and we write down the rate structure, inspection checklist, fine policy and integrations that make your operation different. From confirmed scope, typical delivery is two to four weeks: we build on our own bench, deploy to your staging site for UAT with your real vehicles and rate cards, then go live behind a documented rollback plan. You receive the installable source for your version, the git repository, technical and user documentation, a training session for your counter staff, and a post-go-live support window for defect fixes.

What you get

Installable Frappe app source code built and tested for your exact Frappe/ERPNext version (v15 or v16)

Installation and configuration on your bench or Frappe Cloud site, including rate cards, roles and naming series setup

Technical documentation: DocType reference, hooks and doc events, whitelisted API methods, scheduler jobs and extension points

End-user guide covering reservation, check-out, check-in, damage charging, fine recharge and maintenance workflows

Live training session for counter agents and fleet managers, recorded and handed over

UAT on a staging site with your real vehicles and rate cards, signed off before go-live, with a documented rollback plan

Post-go-live support window for defect fixes on the delivered scope

Handover of the private git repository with full commit history, so your team or any future vendor can maintain it

Who this is for

Rental company owner / operations director

Runs a fleet of 20–500 vehicles across one or more branches and is already on ERPNext for accounting. Needs the booking calendar, contracts and damage recovery inside the same system as the invoices, instead of a spreadsheet that only one person understands.

Fleet manager

Accountable for vehicle uptime, service intervals, registration and insurance renewals. Wants preventive maintenance triggered by real odometer readings, vehicles automatically blocked from booking while in the workshop, and utilisation per vehicle rather than per branch.

Counter / branch manager

Handles walk-ins and returns under time pressure. Needs an availability check that answers in one screen, a check-out inspection with photos that takes under three minutes, and a return flow that computes excess mileage, fuel and damage without a calculator.

Finance controller

Owns deposits, fine recharges and revenue recognition. Needs every rental charge to post through standard ERPNext documents so the trial balance, VAT return and receivables ageing stay correct without reconciliation against a side system.

How Car Rental & Fleet Management for ERPNext Compares

Criterion	ECOSIRE	Custom Build	Competitor	ERPNext Native
Fit to your rental workflow	Rate cards, inspection checklist and fine policy modelled on your actual operation during scoping	Same potential fit, but you write the spec and carry the design risk	Fits the vendor's reference customer; you adapt your process to the app	No rental workflow at all — Vehicle and Vehicle Log only
Availability and double-booking control	Single whitelisted overlap query across reservations, agreements and maintenance blocks	Depends entirely on whether your developer thought about concurrency	Usually present, but rarely accounts for workshop or off-fleet blocks	Spreadsheet or calendar outside ERPNext; collisions found after the fact
Time to live	Typically 2–4 weeks from confirmed scope, including staging UAT	3–6 months typical for an in-house build from zero	Install in a day, then weeks of workarounds for what it does not do	Immediate, because there is nothing to install and nothing to use
Accounting integration	Posts through native Sales Order, Sales Invoice, Journal and Payment Entry	Frequently ends up with a side ledger that finance must reconcile	Varies; some marketplace apps keep their own rental charges table	Invoicing is excellent — it just has no rental documents feeding it
Code ownership	Private git repository handed over with full history; you can fork or leave	You own it outright, and you own every future bug in it	Vendor-owned; you are on their roadmap and their release cadence	Frappe/ERPNext core, GPLv3, maintained upstream
Upgrade path to v16 and beyond	Standard app structure, doc events and whitelisted methods — designed to survive upgrades	Often built with server scripts and Customize Form; upgrades get painful	Depends on whether the vendor keeps pace with Frappe releases	Upgrades cleanly, since there is nothing rental-specific to break
Support model	Named team who built it, post-go-live defect window, retainer available	Whoever wrote it — and their availability next year is your risk	Ticket queue with published response times, if any	Community forum plus your own ERPNext partner
Cost shape	Fixed quote for the agreed scope, changes priced before they are built	Time and materials; scope creep lands on your budget	Low licence fee, plus the cost of the process changes it forces on you	No extra cost, and no rental capability

Frequently Asked Questions about Car Rental & Fleet Management for ERPNext

How long does delivery take?

This is a build-to-order app, not an instant download. Typical delivery is two to four weeks from confirmed scope: we scope on a call, build on our own bench, deploy to your staging site for UAT with your real vehicles and rate cards, then go live behind a documented rollback plan. Scope with heavy third-party integrations — an aggregator feed, a telematics provider, a national fine portal — can extend that, and we tell you the revised estimate before you commit, not after.

What support and updates do I get after go-live?

Delivery includes a post-go-live support window for defect fixes on the delivered scope — if something we built does not behave as documented, we fix it. You also receive the git repository, so your own team can maintain it. Version upgrades (for example moving the app from ERPNext v15 to v16) and new capabilities beyond the agreed scope are quoted separately as a change or an annual support retainer, whichever suits you.

Does this work with my existing ERPNext data and accounting?

Yes. It installs as a separate Frappe app in your `car_rental` module and reuses your existing Customer, Item, Company and Vehicle records rather than duplicating them. All revenue posts through native ERPNext Sales Order, Sales Invoice, Journal Entry and Payment Entry, so your chart of accounts, tax templates and receivables reports keep working exactly as they do today — there is no parallel ledger to reconcile.

Which Frappe and ERPNext versions do you support?

We build and test for Frappe/ERPNext v15 and v16, and we target the exact version running on your bench rather than a generic build. If you are on an older version we will tell you honestly during scoping whether we recommend upgrading first, and what that costs, before any development starts.

Can it handle traffic fines that arrive weeks after the car was returned?

That is precisely what the `Traffic Violation` DocType is for. You record the fine against the plate with the violation date and time; the app matches it back to whichever rental agreement covered that moment, applies your configured admin fee, and raises a recharge invoice against the correct customer. Toll charges follow the same path, and unmatched violations are queued for manual assignment rather than silently dropped.

Can our website or booking bot check availability?

Yes. Availability, quoting and booking are exposed as whitelisted methods over the standard Frappe REST API, authenticated with an API key and secret and scoped by role. Your website, a WhatsApp bot or an aggregator integration reads the same overlap query the counter uses, so an online booking cannot collide with a walk-in.

What if our rate structure or inspection process is unusual?

Assume it is. Rate tiers, seasonal pricing, mileage allowances, one-way fees, deposit rules and the inspection checklist are all captured in the scoping call and built to your operation. Anything we cannot deliver within the agreed scope and timeline is said out loud during scoping, not discovered at UAT.