Calk NZ

Calk NZ is a collection of 146 calculators built for New Zealanders. Every result is based on current IRD rates and New Zealand rules for the 2026-27 financial year.

No sign-up. All calculations run on your device — your financial data never leaves it. Supported by unobtrusive ads.

TAX & PAY • Income tax and PAYE with all five brackets and the ACC earner's levy • Take-home pay, secondary tax, bonus tax, schedular payments (IR330C) • GST, provisional tax, trust tax (39% trustee rate), FIF and crypto tax

FAMILY & BENEFITS • Working for Families, FamilyBoost (40% childcare rebate), Best Start • Child support (IRD 8-step formula), paid parental leave, NZ Super

HOME & MONEY • Mortgage repayments, refix strategy, offset accounts, lump-sum savings • KiwiSaver projections with the 2026 3.5% default rate • Term deposits with RWT, net worth, budgeting, power plans

…and 100+ more: car costs, WoF & rego, insurance, farming, building, immigration.

EVERY CALCULATOR SHOWS ITS WORKING Step-by-step formulas, current-year rates with sources, and worked examples — verified against Inland Revenue (IRD), ACC, Employment NZ / MBIE, RBNZ, Work and Income (MSD), NZTA Waka Kotahi, Stats NZ, Kāinga Ora, NZ Customs, BRANZ and Beef + Lamb New Zealand publications. Each page carries a "last reviewed" date.

IN ENGLISH AND TE REO MĀORI The only NZ calculator collection fully available in both languages.

NEW IN 1.0.2 • Favourites: star any calculator, find it on the home screen • Recently used calculators on the home screen • calk.nz links now open straight in the app • Smaller, faster updates

Rates update automatically — no app update needed when IRD figures change.

Disclaimer: Calk NZ provides general information, not financial advice. For decisions that affect your tax position, consult a qualified professional.