How to grow a taxi business with more cars: from 5 to 20

Five cars is a firm the owner can run from a mobile phone. Twenty cars isn't. Somewhere between the two you stop being the controller, the recruiter, the bookkeeper and a spare driver all at once, and the firm needs ways of working that hold up when you're not there. This guide covers what changes as you grow a taxi business with more cars, the order I'd fix things in, and the licensing and employment figures you'll meet on the way. For the wider plan, read how to grow a taxi business.

What changes when a taxi firm grows from 5 to 20 cars?

The work stops fitting in one person's head. At 5 cars you can remember every regular, every driver's hours and every account. At 20 you can't, and the gaps show up as calls that ring out, drivers waiting while jobs sit unsent, and invoices nobody raised.

Here's how each part of the firm changes along the way:

None of these arrives at a set number of cars. Each one arrives when the old way starts losing you work.

In what order should you fix things as you grow?

Fix what loses you bookings first, then what loses you drivers, then what could cost you the licence. The order I'd follow:

1. Phones and booking records. Every new car needs jobs, and jobs start with an answered call or a booking that lands somewhere you record it.
2. Drivers and the settle. More cars means more drivers, and drivers stay where the work is steady and the money arrives when you said.
3. Licences and insurance. Each new car needs a plate and cover before it carries anyone.
4. Staff. A controller, once the phones and the dispatching need more hours than you have.
5. Premises. Only when home or a small office stops working.
6. Money and tax. Accounts, payment terms, and whether you're heading for the VAT threshold.

Growth that runs ahead of the first two steps just gives you more cars waiting for work. If you're not sure you need the extra cars yet, read when to add more taxis to your fleet first.

How do the phones and controllers change as you add cars?

The phones go from something you answer between jobs to a job of their own. With 5 cars, the owner on a mobile can cope. Somewhere past 10, the Friday rush and the school-run hour bring more calls than one person can take while also sending cars.

Look at your phone provider's call log by hour before you hire anyone. If calls ring out mainly at two or three peaks a week, a second controller for those hours may be enough. If they ring out all day, you need a full-time controller. When to hire a taxi controller covers the decision, and missed calls in a taxi office shows how to read the log.

An employed controller brings employer duties. The 2026 to 2027 figures, from GOV.UK:

• National Living Wage: £12.71 an hour for workers aged 21 and over, from 1 April 2026.
• Employer National Insurance: 15% on earnings above £96 a week (£5,000 a year). The Employment Allowance can take up to £10,500 a year off your bill.
• Employers' liability insurance: needed as soon as you become an employer, with cover of at least £5 million. You can be fined £2,500 for every day you aren't properly insured.
• Workplace pension: you must enrol staff aged between 22 and State Pension age who earn at least £10,000 a year.

Example, with every input stated. A controller on 40 hours a week at £12.71 costs £508.40 a week in wages. Employer National Insurance on that is (£508.40 minus £96) × 15% = £61.86 a week, before any Employment Allowance and before pension contributions.

Booking and dispatch staff need checking too. The Department for Transport's statutory standards say operators should show that all staff who deal with the public or dispatch vehicles have a basic DBS check, keep a register of everyone who takes bookings or dispatches, and have a policy on employing ex-offenders in those roles. A basic check costs £20 from 5 October 2026.

For the hours a controller doesn't cover, there's another option. An AI phone agent answers your booking line when your office doesn't, quotes your own fixed prices and books the job into your Dispatch AI account. Whatever you choose, plan nights and peaks on purpose: phone numbers and phone systems for a taxi firm and call overflow for taxi firms cover the set-ups.

When do you need a booking system instead of a diary?

When you can no longer record every job properly before it starts. Outside London, section 56(2) of the Local Government (Miscellaneous Provisions) Act 1976 says an operator must record the particulars of every booking before the journey begins, in the form the council sets. That covers jobs you take on at another operator's request as well as the ones passengers book with you.

The statutory standards suggest keeping booking records for at least 6 months. In London, TfL requires 12 months. At 20 cars that's thousands of records, and a paper book makes them hard to search when the council or a passenger asks about a job.

A booking system pays its way in three more ways as you grow. It shows where each booking came from, it sends jobs to drivers without a phone call each time, and it gives you the numbers to manage by. Moving from paper to a booking system covers the switch, and dispatch software for a small fleet covers what to look for at this size.

How do you find and keep more drivers?

Recruit before you need them, and settle them the same way every week. Going from 5 to 20 cars means finding 15 or more drivers, plus replacements for any who leave on the way.

Every driver needs a private hire driver licence from the same council as your operator licence and the car, so recruit ahead of the work. Gloucester City Council charges £289 for a new 3-year driver licence from 1 May 2026, and an enhanced DBS check costs £41 from 5 October 2026. The statutory standards say drivers on the DBS Update Service, which costs £15 a year, should still be checked every 6 months.

Decide how you'll pay and settle drivers before you take on the next five:

• Commission or weekly rent. Each suits a different kind of firm, and driver commission or weekly rent compares them.
• A written weekly statement: jobs, fares, account work, commission or rent and any deductions, paid on the same day each week.
• Employment status. If you set drivers' hours and control how they work, they may not be self-employed. Read self-employed or employed drivers before you write a contract.
• Steady work. Drivers leave firms where they sit idle for hours. Keeping drivers busy in quiet hours covers filling the gaps.

Finding your first drivers and recruiting taxi drivers cover where to look, and keeping good drivers covers why they go.

What licensing changes when you add more vehicles?

Each new car needs its own vehicle licence, and your operator licence fee can go up a band. Outside London, section 48 of the 1976 Act says a council may only license a private hire vehicle if it's suitable, safe, comfortable, in good mechanical condition and insured for its use. The licence lasts no more than a year. The same section stops a council refusing a private hire vehicle licence just to limit numbers.

Hackney carriages are different. Section 16 of the Transport Act 1985 lets a council refuse a hackney carriage licence to limit numbers, but only if it's satisfied there's no significant unmet demand for taxis in its area. If you run hackneys, ask whether your council caps plates before you plan around more of them.

Fees vary by council, and some price the operator licence by fleet size:

In Gloucester, growing from 5 to 20 cars moves you from the small band to the medium band. Read your licence conditions for when you must tell the council your fleet size has changed, and check your own council's fee table. Taxi licence fees in UK councils has more examples, and the private hire operator licence covers the licence itself.

How does insurance change at 20 cars?

The question shifts from "is each driver insured?" to "who insures what, and how do I know it's in force today?" Under section 48(1)(b) of the 1976 Act, a council won't license a private hire vehicle unless there's insurance in force for its use that meets Part VI of the Road Traffic Act 1988.

If drivers bring their own cars, they'll hold their own hire and reward policies, and your job is to check each one and keep its renewal date on file. If the firm owns the cars, a fleet policy can put them all on one renewal. Once you employ a controller or office staff, employers' liability insurance comes in as well. A broker who works with private hire firms can compare the options, and our guide to taxi business insurance covers the types of cover.

Do you need premises when the fleet grows?

Not necessarily. What the council cares about is where bookings are taken and where records are kept, and your licence conditions set that out. Running a taxi company from home and private hire operator premises requirements cover both options.

If you do take an office, check planning first. The Town and Country Planning (Use Classes) Order 1987 lists a taxi business among the uses that sit outside every use class, so moving into a shop or office unit is a change of use the council's planning team will want to look at. Ask them before you sign a lease.

What happens to the money as the firm grows?

More cars means more cash moving through the firm, and two things catch growing firms out: account customers who pay late, and the VAT threshold.

Account work brings steady weekday jobs, but you pay the drivers before the customer pays you. GOV.UK says that if you haven't agreed a payment date, a business payment is late 30 days after the customer gets the invoice, and agreed terms between businesses should normally be no longer than 60 days unless that's fair to both. Put your terms in writing before the account's opening job. Pricing corporate taxi accounts covers terms and rates.

The VAT registration threshold is £90,000 of taxable turnover. Whether your turnover means the full fares or only your commission and rent depends on whether you contract with passengers as principal or as agent for the drivers. Outside London, the Supreme Court ruled on 29 July 2025 that the 1976 Act doesn't require an operator to contract as principal. Get an accountant to read your passenger and driver terms well before you reach £90,000. Tax for a taxi business explains the rest.

How do you know the growth is paying?

Check a few numbers every week as the cars go on: missed calls by hour, jobs per driver hour, bookings by source and how long accounts take to pay. If jobs per driver hour falls each time you add a car, you're adding cars faster than work. The numbers to track in a taxi firm explains each one, and is a taxi business profitable covers where the money goes.