Construction accounting basics

Construction is unlike any other business. So how do you learn the basics of construction accounting?

A construction business owner doing their accounting on their phone

Why is construction accounting different?

If you work in the construction industry, you’ll know there’s rarely a fixed business structure. The site manager probably doesn’t employ the other people working on a project. They’re likely to be a contractor – and so is everyone else.

Contractors make up the bulk of the construction workforce. They may be working on several projects at the same time, spending a few hours or days on each. They might also employ their own subcontractors to help out.

Temporary workers will come and go as required. And if you do have a formal payroll, it may change on a weekly basis. So compared with a conventional business, this is much more fluid and changeable.

In this guide we’ll look at what you need to know about construction accounting. This will help you keep your business in the black and out of trouble.

Start at the beginning

Like any other entrepreneur, if you’re starting a construction business it pays to do it properly – right from the start. That means getting your business and your accounts in order before you take on any work:

  • Incorporate your business: Incorporating as a small business gives you legal protection. This does depend on the type of company you set up, for example it could be set up as a limited liability company, partnership or sole proprietorship. Talk to a lawyer or accountant about the best structure for your business.
  • Buy insurance: Construction can be dangerous, from both a physical and a legal perspective. If specialist insurance cover is suitable in your country, get it to cover you in case things go wrong.
  • Hire an accountant or a bookkeeper – or both: Bookkeepers will help you manage your day-to-day accounts, processing expenses, bills and invoices. Accountants will help you with your business structure and advise on ways you can save tax. It makes sense to hire both. They will probably save you more than they cost.
  • Keep your skills up to date: Laws change, especially safety laws. Keep any required certification up to date by going on training courses. This is important whether you’re a builder, electrician, plumber, carpenter or other worker. Your insurance may also depend on up-to-date certification – and you’ll probably get more work too.

Get the details right

Construction accounting regulations vary around the world. You may have choices about how you manage your accounts. Your country may also have specific laws that apply.

As you see, this can be a complex topic. Talk to your accountant or bookkeeper. They will help you avoid expensive mistakes.

Market yourself

As a contractor or sole proprietor, you will be dependent on word-of-mouth marketing for much of your work. So take the time to build up a network of trusted contractors or subcontractors. For example, if you’re an electrician, get to know a reliable plumber. If you’re a builder, get to know a good carpenter.

A real-world social network will help you take on larger jobs, and you’ll be able to share work and refer each other to customers.

When you’re pitching for new business, make a good impression. Your quotes should look professional and be calculated properly. Good accounting software can help. It makes it easy to create documents, with comprehensive templates to impress your clients.

Make accounting part of your workflow

One of the most important things to know about construction accounting is that you have to do it regularly. That means you need to update your accounting software with expense reviews, your cash flow, updated employee information and generated invoices at least once a week. If you fall behind in your accounts, things can quickly get out of hand. It’s a fast-moving industry.

So it’s vital to build accounting into your workflow. Sign up to some good accounting software – and then make sure you use it.

This doesn’t have to be difficult. Modern accounting tools are cloud-based. This means that they are online, so you can access them from a smartphone or tablet even when you’re working on site.

Invoices can be sent, bills of material recorded, expenses tracked – all from your mobile device. Wherever you are, whatever the time of day or night, you always have the most recent view of your accounts.

By doing this, you’ll avoid undercharging due to missed expenses. You’ll also make the most of your business tax allowances. And you’ll reduce the risk of nasty surprises that could crop up if you were audited.

Beware of the cash flow trap

Construction accounting requires caution at times. Let’s say a client wants you to build a new warehouse. You pay for the necessary materials upfront, out of your own business capital.

Then, halfway through the project, the client goes bankrupt. You’re unlikely to receive more than a small percentage of what you’ve paid out for materials. Unless you have enough capital to ride out the storm, you’ll probably go bankrupt too.

This is why it’s important to keep your cash flow balanced. Big expenses should always be matched by big revenues. Invoice your client on a regular basis – and get payment upfront for major materials or labour expenses. If a client's payments stop for any reason, so should your work.

Many small construction firms fail because of bad debts. If you manage your cash flow carefully, you won’t be one of them.

Build for the future

Strong foundations are vital to the stability of any building. They're vital to the stability of your business too. So take the time to get your construction accounting organised – and keep them that way. It will save you a lot of trouble in the long run.


Xero does not provide accounting, tax, business or legal advice. This guide has been provided for information purposes only. You should consult your own professional advisors for advice directly relating to your business or before taking action in relation to any of the content provided.

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