Simple to start, easy to master

Solo is the only app that empowers New Zealand sole traders to easily manage their entire tax journey. From tracking income and expenses to filing tax returns.
Start your free trial

Get started instantly

There’s no registration process or forms to fill out. You can start right now.

Use your existing bank account

You don’t need to set up a special bank account. Any NZ account will do.

You're in control of your money

Solo doesn’t handle your money. You’re always in control.


Track your income

Easily track all your income sources in one place and Solo automatically calculates your tax.

Connect your bank account

Easily track self-employed income directly from your bank transactions. Connect as many banks or accounts as you need.

Sync pre-taxed income from IRD

Automatically sync pre-taxed income sources, such as salary, wages and schedular payments, directly from IRD. No data entry needed.

Create professional invoices

Quickly create simple professional invoices in any currency. Customise your invoices and track overdue payments.

Calculating income tax for self-employed

Reduce your tax bill

Confidently claim expenses and automatically depreciate your business assets.

Claim expenses

Automatically claim expenses directly from your bank transactions. Solo gives you tips about which expenses to claim and does all the math. Learn more

Depreciate assets

Solo automatically calculates the correct amount of depreciation on your business assets as you go. Simply set and forget. Learn more

Claim sole trader deductible expenses nz

File tax returns effortlessly

Solo is the only app that automatically calculates all your taxes – as you go.

Income tax

Filing income tax returns is now easier than ever. Solo calculates all the figures you need to simply copy and paste into your online return. Learn more


Solo automatically calculates GST on income and expenses and provides all the figures you need to simply copy and paste into your online return. Learn more


With Solo’s real-time ACC calculations you’re always prepared. Put aside exactly how much money you need and never miss a payment. Learn more

Calculate income tax return for New Zealand sole traders

Enjoy the benefits

Confidently manage your tax journey and achieve more financial freedom and success.

Peace of mind

With Solo’s unique real-time tax calculations you’re always prepared. No more guesswork, no more unexpected tax bills. Budget with confidence and pay only what you owe.

More money in your pocket

Claim more expenses and save more money. Solo stands out as not just an affordable option but as a tool that aims to put you financially ahead.

Save time

Solo simplifies and streamlines tax management so you can focus on what you do best – growing your business. With Solo, tax returns are quick and effortless.

Solo income tax calculator nz

Solo has been amazing. I understand my tax situation much better and have found filing with the IRD fast and simple. When I’ve had questions I’ve had rapid personalised support from Solo. I have saved so much in accounting fees already but more importantly I’m not worried about a tax shock!- Anna
The app has been amazing and completely saved my sanity. I recommend it to everyone. Thank you !!!- Hannah
Fantastic. So quick to link up with bank and ird, setup was a breeze. Made it through my first sole trader tax return using Solo's easy to follow system. This app has improved my understanding and comfort level with accounting and taxation. Thank You.- Joshua
Thank you so much for giving me this Financial Independence.- Vanessa
I just want to say your app is amazing. I have been trialing out other software like Xero, MYOB, Reckon, by far this is the most user friendly application for sole traders. No other unnecessary features. And super easy to navigate.- Dexie
Amazingly simple, no more guesswork and the dashboard with upcoming dates and how much tax to set aside brings so much peace of mind. I reckon your app is a game changer for the newly self employed!- Natalie

Go Solo today

From expenses to tax returns and more, you’ll discover the effortless way to stay on top of it all.
Start your free trial