Free Tools & Guides for NZ Tradies

ACC Levy Calculator NZ — Self-Employed Tradie Levies 2025/26

Calculate your ACC levies as a self-employed NZ tradie — work levy, earner levy, and working safer levy based on your trade and income.

Apprentice Wage Calculator — NZ Training Rates 2026

Calculate minimum and typical apprentice wages for NZ trades — by year of training, trade type, and hours worked.

Bathroom Renovation Cost Calculator — NZ

Estimate your bathroom renovation cost in New Zealand. Covers tiling, plumbing, waterproofing, fixtures, and labour.

Business Breakeven Calculator — NZ Tradies

Calculate your breakeven point, minimum revenue, and profit margin as an NZ tradie or small business.

Brick & Block Calculator — NZ

Calculate how many bricks or blocks you need for a wall, plus mortar and sand quantities. NZ standard brick and block sizes.

NZ Building Consent Fee Estimator

Estimate NZ building consent fees including the MBIE building levy, BRANZ levy, and council processing fees — so you can include them in your quote.

Electrical Cable Sizing Calculator — NZ

Calculate the correct cable size for NZ electrical installations — current capacity, voltage drop, and circuit breaker sizing.

Carpet & Flooring Calculator — NZ

Calculate carpet, vinyl, and floating floor quantities and costs for NZ homes. Includes underlay and installation.

Cash Flow Forecast Calculator — 12-Week Tradie Business Planner

Plan your tradie business cash flow 12 weeks ahead — track expected income, expenses, tax reserve, and running balance to spot cash gaps before they hit.

NZ Weatherboard & Cladding Paint Calculator

Calculate litres of primer, undercoat and topcoat needed for NZ weatherboard, Hardiplank and plaster cladding systems — using NZ supplier spread rates.

Concrete Calculator — NZ

Calculate how much concrete you need in m³ and 20kg bags. Covers slabs, footings, posts, and pathways.

NZ Contractor vs Employee Tax Calculator 2025–26

Compare net take-home pay as a self-employed contractor versus a PAYE employee on the same gross income — including tax, ACC, KiwiSaver and leave.

Decking Calculator — NZ

Calculate how many deck boards, joists, posts and screws you need for any NZ deck. Covers timber and composite.

NZ Tool & Equipment Depreciation Calculator

Calculate the annual depreciation deduction for your tools and equipment using the IRD diminishing value method.

Drain Grade & Pipe Slope Calculator — NZ

Calculate pipe gradient, fall, and minimum grade for drainage pipes to NZ plumbing code requirements.

Earthworks & Excavation Calculator — NZ

Calculate excavation volumes, soil disposal costs, and fill requirements for NZ building sites.

NZ Employee Total Cost of Employment Calculator 2026

Calculate the true cost of employing a worker in NZ — including wages, KiwiSaver, ESCT, ACC, annual leave, sick leave and public holidays.

NZ Equipment Finance & Loan Calculator for Tradies

Calculate weekly repayments, total interest and true cost of financing tools, vehicles or equipment for your NZ tradie business.

Fence Calculator — NZ

Calculate posts, rails, palings, and concrete needed for any NZ fence. Covers timber paling, post-and-rail, and Colorbond.

Gib & Plasterboard Calculator NZ — Sheets, Stopping & Labour Cost

Free NZ gib board calculator — enter your room dimensions to get sheet count, stopping coats, scrim, materials and installed cost estimate. Includes NZ pricing.

NZ GST Calculator

Add or remove 15% GST instantly. Works for any NZ tradie invoice or quote.

NZ H1 Insulation Compliance Calculator (2023 Requirements)

Check minimum R-values required for your NZ climate zone under the H1 Energy Efficiency 5th edition — ceiling, walls, underfloor and slab.

NZ Healthy Homes Cost Estimator

Estimate the cost to bring a rental property to Healthy Homes Standards — covering all 5 standards: heating, insulation, ventilation, moisture and draught-stopping.

Heat Pump Sizing Calculator — NZ

Calculate the right heat pump size (kW) for your NZ room or home. Get recommended capacity, running costs, and brand comparisons.

NZ Holiday Pay Calculator — Holidays Act 2003

Calculate correct annual leave payouts for NZ employees using the Holidays Act 2003 — greater of ordinary weekly pay or average weekly earnings.

NZ Hot Water Cylinder Sizing Calculator

Calculate the right hot water cylinder size for a NZ home or rental — including Healthy Homes Standards compliance for rental properties.

NZ Tradie Hourly Rate Calculator

Work out what to charge per hour based on your target income, overheads, and billable hours. Includes ACC levy estimates.

Insulation Calculator — NZ R-Value & Area

Calculate how much insulation you need for your NZ home — ceiling, underfloor, and wall insulation. R-values, batts, and cost estimates.

Irrigation System Calculator — NZ

Calculate irrigation pipe lengths, sprinkler head spacing, flow rates, and system cost for NZ gardens and lawns.

Is My Quote Fair? NZ Tradie Quote Checker

Check if your tradie quote is fair for your city and job type. Enter your quote and we'll compare it against typical NZ rates for 29 job types across all major cities.

NZ Job Cost & Quote Builder

Calculate job costs, apply your markup, and produce a quote price with GST for NZ tradie jobs — with regional labour rates by city.

Kitchen Renovation Cost Calculator — NZ

Estimate kitchen renovation costs in New Zealand — cabinetry, benchtops, appliances, plumbing, and labour.

NZ KiwiSaver Employer Cost Calculator 2026

Calculate the true employer cost of KiwiSaver including the 3.5% contribution and ESCT (employer superannuation contribution tax) for NZ tradies.

Labour Cost Calculator — NZ Tradies

Calculate total labour cost for a job, team, or project. Includes on-costs, overhead, and profitability check.

NZ Leave Entitlements Calculator — Annual Leave, Sick Leave & Public Holidays

Calculate the full value of statutory leave entitlements for NZ employees — annual leave, sick leave, public holidays, and bereavement leave.

Markup vs Margin Calculator for NZ Tradies

Convert between markup percentage and gross margin percentage — a common source of confusion that can cost tradies thousands.

Materials Price Escalation Calculator — Budget for Rising Costs NZ

Calculate the impact of materials price inflation on your construction quote — ensure your estimate accounts for rising costs over the project duration.

Overtime & Holiday Pay Calculator — NZ

Calculate overtime pay, time-and-a-half, double time, and public holiday rates for NZ employees and contractors.

Paint Calculator — NZ

Calculate how many litres of paint you need for walls, ceilings, and exteriors. Works for any NZ room or house.

Paving Calculator — NZ (Pavers, Base & Sand)

Calculate how many pavers, base course, and sand you need for a NZ paving project. Includes cost estimates.

PAYE Employee Cost Calculator — NZ

Calculate the true cost of employing someone in NZ — PAYE, ACC, KiwiSaver, holiday pay, and total employer cost.

Pool Volume & Chemical Calculator — NZ

Calculate your pool volume in litres, chemical doses, filter run times, and ongoing costs for NZ swimming pools.

NZ Provisional Tax Calculator 2025–26

Calculate your NZ provisional tax instalments using the standard or estimation method — IRD dates, 105% uplift, and safe harbour built in.

NZ Provisional Tax Top-Up & Safe Harbour Calculator

Calculate whether you qualify for NZ provisional tax safe harbour, and the exact top-up needed to avoid IRD use-of-money interest (UOMI).

Quote Builder Wizard — Build a Professional NZ Tradie Quote Step by Step

Build a complete, professional quote for any NZ trade job in 4 steps — labour, materials, markup, GST, and a printable summary your client can sign.

Retaining Wall Calculator — NZ

Estimate retaining wall materials and costs for NZ — concrete blocks, timber, or keystone. Includes drainage aggregate.

NZ Retaining Wall Soil Pressure Calculator

Calculate active soil pressure and surcharge loads on retaining walls — and check whether engineering sign-off is required under NZ Building Code B1.

NZ Construction Retentions Calculator

Calculate retention amounts, release schedules and trust account requirements under the NZ Construction Contracts Act 2002 and 2015 amendments.

Roof Area Calculator — NZ

Calculate actual roof area from your house footprint and roof pitch. Works for gable, hip, and skillion roofs.

Scaffolding Cost Calculator — NZ

Estimate scaffolding hire costs for NZ building projects — residential, commercial, and roof access.

NZ Scaffolding Hire vs Buy Calculator

Compare the cost of hiring vs buying scaffolding for NZ tradies — roofing, painting, cladding and maintenance jobs.

NZ Skip Bin Size & Cost Estimator

Estimate skip bin size and waste disposal cost for NZ construction jobs — including the NZ waste levy per tonne.

Solar Panel Savings Calculator — NZ

Estimate how much solar panels will save you in NZ — system size, annual generation, payback period, and ROI.

Staircase Calculator — NZ (Rise, Run & Dimensions)

Free NZ staircase calculator — enter floor height to get step count, rise, going, and total run compliant with NZ Building Code. Instant results.

NZ Stormwater & Wastewater Pipe Grade Calculator

Calculate minimum pipe fall and check compliance with NZ Building Code E1/E2 and AS/NZS 3500.3 drainage standard for stormwater and foul drainage.

Subcontractor Tax & GST Calculator — NZ

Calculate GST, income tax, and net earnings for NZ subcontractors and self-employed tradies.

Tile Calculator — NZ

Calculate how many tiles you need for floors, walls, or splashbacks. Includes wastage and grout estimates.

Timber Framing Calculator — NZ (Studs, Plates & Lintels)

Calculate timber framing quantities for NZ wall, floor, and roof framing — studs, top plates, nogs, and lintels.

NZ Vehicle Mileage Claim Calculator

Calculate your IRD mileage reimbursement or tax deduction using the 2024-25 NZ mileage rates.

NZ Voltage Drop Calculator — AS/NZS 3000 Wiring Rules

Calculate voltage drop percentage for NZ residential and commercial electrical installations per AS/NZS 3000:2018 Wiring Rules.

Waterproofing Calculator — NZ (Bathrooms & Decks)

Calculate waterproofing membrane, primer, and tape quantities for NZ bathrooms, showers, and decks.