Mighty Efficient Ltd

Bookkeeper · 3 Frederick Street, Wanaka, Otago

  • Platinum champion partner

    Partner status

    Platinum champion partner 
  • Partner since 2008


    Partner since 2008 
  • Xero advisor certified


    Xero advisor certified 
  • Xero payroll certified


    Xero payroll certified 

About us

We believe in simplicity. Our tool for labour tracking and marking up of supplier bills is simple. That's how we can help improve profit and cashflow.

We're 100% Xero. Ask us for Setups & Training if you like to do your own bookkeeping the most efficient way.


  • NZ Bookkeepers Association Incorporated

Meet the team

Mighty Efficient Ltd advisors: 2 - Xero certifications: 4

To become certified, advisors complete learning modules on Xero’s key features and pass a practical exam.

Anja O'Connor

Head in the Cloud

Profile image for Anja O'Connor
  • Xero advisor certified
    Has a strong understanding and practical knowledge of how to use Xero with clients.
  • 2 years Xerocon attendance

Always thinking about better ways - used to drive my bosses crazy!

Making things easier for business owners spins my wheels. Innovation is great but keep things simple or it's not being used.

Bronwyn McCarthy


Profile image for Bronwyn  McCarthy
  • Xero payroll certified
    Has knowledge and experience of setting up payroll efficiently and ensuring a smooth payroll process.
  • Xero advisor certified
    Has a strong understanding and practical knowledge of how to use Xero with clients.
  • 2 years Xerocon attendance

I started my bookkeeping career in the hospitality industry over 20 years ago, from working behind the bar I moved on to the office swiftly. I love getting things done.

Mighty Efficient Ltd: Bank experience

Clients of Mighty Efficient Ltd connect to a range of banks via Xero. Mighty Efficient Ltd specialises in working with some of those banks; they can help with setting up bank feeds, and are knowledgeable about accessing bank loans and streamlining payments through Xero.

Bank connections 

  • BNZ
  • Kiwibank
  • NBS
  • eWAY
  • Fonterra RD1
  • PGG Wrightson
  • Rabobank
  • ANZ
  • ASB
  • Bartercard
  • PayPal
  • Heartland Bank
  • Westpac
  • SBS Bank
  • Farmlands
  • TSB Bank

Mighty Efficient Ltd: Industry experience

Mighty Efficient Ltd works with businesses across a range of industries. They specialise in helping to choose apps that integrate with Xero to boost business performance for some of those industries.

Industries Served 

  • Construction and trades
  • Real estate and hiring services
  • Accommodation and hospitality
  • Arts and recreation
  • Professional services
  • Agriculture
  • Manufacturing
  • Healthcare and social services
  • Repairs and personal services
  • Retail
  • Finance and insurance
  • Wholesale
  • Not-for-profit
  • Marketing, advertising and consulting
  • Administration and support services
  • Education
  • Transportation and storage
  • E-commerce
  • Media and communications

Mighty Efficient Ltd : App experience

Mighty Efficient Ltd serves clients who use 23 different apps that connect and integrate with Xero.

Find us

Mighty Efficient Ltd has an office in 1 location


3 Frederick Street, Wanaka, 9381, Otago

+64 34434912

New to Xero? Mighty Efficient Ltd can help

Xero is beautiful online accounting software for smaller businesses. Mighty Efficient Ltd can help make your switch as smooth as possible.

Contact them to find out how they can help your business.

  • 4 Years Xerocon Attendance ?
    The firm shows a commitment to Xero and to professional development by having one or more of their people attend Xerocon, Xero’s annual global conference, for the number of years shown.
  • Partner since 2008


  • 2016 Regional Bookkeeping Partner of the year - South 2017 NZ,
  • Xero Set Up Expert 2017 NZ
Please note, Xero doesn't guarantee the service of any one advisor

We don’t review advisor listings and we don’t recommend or guarantee the service provided by any one advisor, so make sure you check them out yourself and get comfortable with them yourself.

Xero certification means that some or all team members have completed courses and been assessed by Xero as proficient in the use of the Xero application.

Xero specialisation means that some or all team members have completed several short learning modules to develop skills in that area.

Xero doesn’t assess any individual advisor’s or firm’s proficiency as an accountant, bookkeeper or financial advisor. And Xero certified advisors and advisors with industry or bank specialisations are not employees of Xero.