Working for Families — In-Work Tax Credit

What Is This Payment?

The In-Work Tax Credit is the "in-work" component of Working for Families, administered by Inland Revenue alongside the Family Tax Credit, Best Start Tax Credit and Minimum Family Tax Credit. Its policy purpose is to make paid work pay better than benefits for families with children — it is paid on top of FTC for families who have left main benefits and entered the workforce.

The work-test gate is hard. Receiving any main benefit — Jobseeker Support, Sole Parent Support, Supported Living Payment, Young Parent Payment, Youth Payment or NZ Super — switches IWTC off entirely for the weeks you receive that benefit. The two systems are designed to be mutually exclusive: main benefits include their own work-related supports, and IWTC is the equivalent for families who have transitioned into employment. A working family on FTC and IWTC who loses their job and goes onto Jobseeker will lose IWTC immediately while keeping FTC.

Both partners' incomes count for the abatement test, but only one partner needs to be in paid work for the family to qualify. Self-employment counts as work as long as current weekly earnings are above zero — a loss-making self-employed year breaks that gate.

The 1 April 2026 to 31 March 2027 boost lifts the base from $5,070 to $7,670 per year. It is currently legislated as a one-year temporary increase; the rate returns to $5,070 from 1 April 2027 unless Parliament extends it.

How Much Can You Get?

The headline rate is $5,070 per year for the 2025-26 tax year, temporarily boosted to $7,670 per year for 2026-27 only. Add $780 per year for each fourth and later dependent child. The abatement against family income above $44,900 hits the Family Tax Credit first — only when FTC reaches zero does any leftover abatement start to reduce IWTC. That ordering protects IWTC at moderate family incomes.

Formula:

fullEntitlement      = base + max(0, children - 3) × $780
baseAbatement        = max(0, familyIncome - $44,900) × 0.275
ftcEntitlement       = ftcEldest + max(0, children - 1) × ftcPerLater
leftoverAbatement    = max(0, baseAbatement - ftcEntitlement)
iwtc                 = max(0, fullEntitlement - leftoverAbatement)

Worked example 1 — two children, $50,000 family income, both working. Family income excess = $50,000 − $44,900 = $5,100. Total abatement = $5,100 × 0.275 = $1,402.50. FTC entitlement = $7,524 + $6,130 = $13,654. After abatement FTC = $13,654 − $1,402.50 = $12,251.50. Leftover abatement = $0, so IWTC pays the full $5,070. Combined WFF = $17,321.50 per year.

Worked example 2 — two children, $100,000 family income, working. Excess = $55,100. Total abatement = $55,100 × 0.275 = $15,152.50. FTC entitlement = $13,654, fully abated. Leftover abatement = $15,152.50 − $13,654 = $1,498.50. IWTC = $5,070 − $1,498.50 = $3,571.50. Combined WFF = $3,571.50 per year — IWTC is still paying because the base is large relative to the leftover.

Worked example 3 — four children, $80,000 family income, working. IWTC entitlement = $5,070 + $780 = $5,850. FTC entitlement = $7,524 + 3 × $6,130 = $25,914. Combined entitlement before abatement = $31,764. Excess = $80,000 − $44,900 = $35,100. Total abatement = $35,100 × 0.275 = $9,652.50. Combined after abatement = $31,764 − $9,652.50 = $22,111.50 per year. The combined entitlement is reduced as a single pool; FTC is hit first, then IWTC if anything is left over.

Eligibility Conditions

1. In paid work: employment_status in {employed, self_employed} (the rule engine flag is isWorking = true).
2. At least one dependent child: childCount > 0 — same dependent-child definition used across Working for Families.
3. Not on a main benefit: receiving_main_benefit = false. Jobseeker Support, Sole Parent Support, Supported Living Payment, Young Parent Payment, Youth Payment and NZ Super all set this true and block IWTC.
4. Current paid work: weekly_income > 0. Self-employed parents must have positive current earnings, not just an open business.
5. NZ residency (implied): ordinarily resident in New Zealand and holding citizenship, permanent residence or a qualifying visa. Same residency rule used for FTC.

How To Apply

Apply through Inland Revenue using myIR. The Working for Families registration form covers FTC, IWTC and Best Start in a single workflow — there is no separate "apply for IWTC" path.

• Channel: myIR online registration, or by paper form IR294.
• Evidence required: IRD numbers for both partners and each dependent child, employer details (or self-employment income forecast), bank account for fortnightly payments, and dependent child details including dates of birth.
• Choosing a payment frequency: weekly, fortnightly or end-of-year lump sum at the IR3 square-up. Most working families choose fortnightly to align with pay cycles.
• Stop receiving: notify IRD within the same pay period if you stop work or claim a main benefit. Continuing to receive IWTC creates a Working for Families debt that is recovered at the end-of-year square-up.
• Tax year: the WFF year runs 1 April to 31 March; the entitlement is reconciled annually via your IR3 return.

Open the official IRD application page →

Rule-Based Scenarios

Scenario A — Liesel and Ulysses, working couple, two children, $55,000 family income. Liesel works 25 hours per week, Ulysses works 32. Neither receives a main benefit. Family income excess over $44,900 is $10,100; total WFF abatement is $10,100 × 0.275 = $2,777.50. FTC entitlement is $13,654, reduced by the full $2,777.50 to $10,876.50. Leftover abatement is zero, so IWTC pays the full $5,070. Combined WFF entitlement is $15,946.50 per year, paid fortnightly through myIR — equivalent to about $613 per fortnight.

Scenario B — Octavia, working sole parent, one child, $48,000 income. Octavia works full-time as a registered nurse. Family income excess over $44,900 is $3,100; total abatement is $3,100 × 0.275 = $852.50. FTC entitlement (eldest only) is $7,524, reduced to $6,671.50 after abatement. Leftover abatement is zero. IWTC pays the full $5,070. Combined WFF is $11,741.50 per year. If Octavia switched onto Sole Parent Support, IWTC would drop to $0 immediately while FTC continued — a $5,070 annual swing tied entirely to the work-test gate.

Scenario C — Pankaj, two children, $25,000 Jobseeker Support plus partner's $30,000 wage. Pankaj's family receives a main benefit (receiving_main_benefit = true), so the IWTC gate fails immediately and the payment is $0 even though the partner is in paid work. FTC continues and is calculated against the combined $55,000 family income. The takeaway: if any member of the family receives a main benefit, the whole family is blocked from IWTC for those weeks — the rule is per-family, not per-earner.

Common Mistakes

• Receiving IWTC while on a main benefit. Forgetting to switch IWTC off in myIR when you start Jobseeker Support, Sole Parent Support or NZ Super creates a Working for Families debt that IRD recovers at the end-of-year square-up. The day a main benefit starts, log into myIR and update your circumstances.
• Forgetting the fourth-child step. The base $5,070 (or $7,670 in 2026-27) covers up to three children. Each fourth and subsequent child adds $780 per year — a five-child family is entitled to $6,630 in 2025-26, not $5,070. Some families miss this because the entitlement letter highlights the base only.
• Confusing the temporary 2026-27 boost with a permanent rate. The IWTC base is $7,670 only for the period 1 April 2026 to 31 March 2027. From 1 April 2027 it returns to $5,070 unless Parliament legislates otherwise. Treating the boost as permanent in long-term household budgets risks a $2,600 per year overstatement.
• Self-employment loss declarations. A self-employed parent who runs at a loss may have $0 weekly income for tax purposes, which fails the current-paid-work gate even though the business is active. The fix is usually to take a small drawing or wage so weekly income is above zero — talk to an accountant before the year-end.
• Confusion with the Minimum Family Tax Credit. MFTC tops up working family income to a minimum net amount and is mutually exclusive with main benefits in the same way IWTC is — but it is a different per-family payment with no $5,070 base. Some families assume MFTC and IWTC are the same payment; they are not, and the application choices differ.
• Assuming IWTC abates from the first dollar above $44,900. WFF abatement reduces FTC first; IWTC continues to pay in full while FTC is still being abated. A two-child family on $60,000 income still gets the full $5,070 IWTC. The "$44,900 threshold" is shared with FTC but the order of reduction shields IWTC at moderate incomes.

Related Benefits

• Family Tax Credit — universal Working for Families base for families with dependent children; abated first before IWTC starts to reduce.
• Best Start Tax Credit — supplementary WFF payment for children under three; stacks alongside IWTC and FTC for working families.
• Minimum Family Tax Credit — alternative working-family top-up that ensures a minimum net income; sits at the mutually exclusive accounting boundary with IWTC.
• Independent Earner Tax Credit — for working adults without dependent children; mutually exclusive with all Working for Families payments.
• Jobseeker Support — direct conflict: receiving Jobseeker is a main benefit and blocks IWTC entirely for those weeks.
• Sole Parent Support — direct conflict: SPS is a main benefit, so SPS recipients cannot also receive IWTC.