Calk NZ — NZ Calculators

Konstantin Iakovlev

Contains adsIn-app purchases

About this app

Calk NZ is an independent calculator app for New Zealand. It is NOT affiliated with, endorsed by, or connected to the New Zealand government, Inland Revenue (IRD), ACC, or any government agency, and it does not provide government services. All results are estimates for general information only — not professional financial, tax, or legal advice. Always confirm figures with the official source or a qualified professional.

146 free calculators, fully updated for the 2026-27 tax year.

WHAT YOU CAN CALCULATE
Income tax (10.5%–39%), PAYE with ACC levy, GST, provisional and secondary tax, tax refunds; take-home pay, minimum wage, overtime, holiday and final pay; KiwiSaver projections and the government contribution; mortgage repayments, borrowing power, LVR and rental yield; car, personal and credit-card loans; company tax, sole-trader and GST returns, FBT and schedular payments (IR330C); FamilyBoost, Working for Families, Best Start, student allowance and NZ Super; net worth, compound interest, term deposits, PIE/RWT and FIF; plus insurance, building and renovation costs, vehicle running costs, immigration points, and health & lifestyle tools.

SOURCES
Calk NZ is an independent app and does not represent any government entity. Every calculator names the exact source it uses as a tappable, working link so you can verify each figure yourself.

The New Zealand government and Crown-entity sources used in this app are: Inland Revenue (ird.govt.nz), Accident Compensation Corporation (acc.co.nz), Employment New Zealand (employment.govt.nz), Ministry of Business, Innovation & Employment (mbie.govt.nz), Tenancy Services (tenancy.govt.nz), Building Performance (building.govt.nz), Consumer Protection (consumerprotection.govt.nz), Reserve Bank of New Zealand (rbnz.govt.nz), Work and Income / MSD (workandincome.govt.nz), StudyLink (studylink.govt.nz), Tertiary Education Commission (tec.govt.nz), Stats NZ (stats.govt.nz), Waka Kotahi NZ Transport Agency (nzta.govt.nz), Immigration New Zealand (immigration.govt.nz), Kāinga Ora (kaingaora.govt.nz), Ministry of Health / Health New Zealand (health.govt.nz), Commerce Commission (comcom.govt.nz), Financial Markets Authority (fma.govt.nz), New Zealand Customs Service (customs.govt.nz), NZQA (nzqa.govt.nz), the Treasury (treasury.govt.nz), Gen Less / EECA (genless.govt.nz), Ministry for Primary Industries (mpi.govt.nz), Real Estate Authority (rea.govt.nz), Electricity Authority (ea.govt.nz), Department of Internal Affairs (dia.govt.nz), Ministry for the Environment (environment.govt.nz), Electoral Commission (elections.nz), New Zealand Police (police.govt.nz), Ministry of Foreign Affairs & Trade / SafeTravel (safetravel.govt.nz), Office of the Privacy Commissioner (privacy.org.nz), Natural Hazards Commission Toka Tū Ake (naturalhazards.govt.nz), NIWA (niwa.co.nz), and Sorted / Te Ara Ahunga Ora Retirement Commission (sorted.org.nz).

The NZ-to-Australia move calculators also use Australian government sources: Australian Taxation Office (ato.gov.au), Services Australia (servicesaustralia.gov.au) and the Department of Home Affairs (homeaffairs.gov.au).

Calculators that are not based on government data use the recognised industry, research or public-interest authority for their field, also named and linked in the calculator: BRANZ, Beef + Lamb New Zealand, DairyNZ, Consumer NZ, NZX, CoreLogic NZ, Real Estate Institute of New Zealand, AA New Zealand, Registered Master Builders, Resene, Insurance Council of New Zealand, Financial Services Council, Banking Ombudsman Scheme, Motor Trade Association, SPCA New Zealand and MoneyHub. The full list with links is on the app's methodology page.

WHY CALK NZ
- 100% free — no paywalls
- Works offline — calculations run on your device
- Your inputs never leave your phone
- Available in English and te reo Maori
- Dark mode

Developed independently by Konstantin Iakovlev, Auckland, New Zealand — not a government service.
Website: https://calk.nz · Contact: [e-mail]

What’s new

• New: Remove Ads — a one-time purchase that removes all ads forever, with Restore Purchase.
• Updated with the current child support, Warrant of Fitness, contractor withholding, ACC and KiwiSaver figures for 2026-27.
• Star your favourite calculators and jump back to recently used ones from the home screen.
• calk.nz links now open straight in the app.
• Bug fixes and performance improvements.