Working for Families — Minimum Family Tax Credit

What Is This Payment?

The Minimum Family Tax Credit is the "minimum income guarantee" component of Working for Families. It is administered by Inland Revenue alongside the Family Tax Credit, In-Work Tax Credit, and Best Start Tax Credit. The four WFF components share an application channel and an annual square-up, but each has its own eligibility logic and its own job in the system.

The design intent of MFTC is to make sure a low-paid working family is always financially better off in employment than on a main benefit. The floor is calibrated so that after-tax wages plus MFTC reliably exceed the typical cash value of Jobseeker Support or Sole Parent Support for a family with children. Without MFTC, low hourly rates plus high marginal taxes on additional benefit-style income would create a "poverty trap" where staying on a main benefit is rationally better than taking work.

Two design rules of MFTC are easy to miss. First, the wage-and-salary restriction is strict: parents whose income is treated as self-employment under the Income Tax Act are excluded from MFTC even if their net business income is below the floor. This is because self-employment earnings cannot be verified through PAYE in real time. Second, the hours threshold is set high enough — 20 hours per week for sole parents, 30 hours combined for couples — to align with the formal WFF definition of "paid work". Below those thresholds the rule pays $0 regardless of net income.

MFTC is a top-up, not a fixed amount. As wages rise above the after-tax floor, MFTC tapers to zero on a one-for-one basis: every extra dollar of net wage removes a dollar of MFTC. Once the floor is reached, MFTC stops; further pay rises do not affect MFTC because it is already $0.

How Much Can You Get?

MFTC = max(0, $36,604 - net employment income for the year). Net employment income is calculated using New Zealand's progressive PAYE tax brackets (10.5% up to $15,600, 17.5% to $53,500, 30% to $78,100, 33% to $180,000, 39% above $180,000), without ACC earner levy adjustments.

• Worked example 1 — sole parent on $30,000 gross. A sole parent works 25 hours per week at $24/hr = $30,000 gross/yr. PAYE on M code is approximately $4,144 ($1,638 in the 10.5% bracket plus $2,520 in the 17.5% bracket), giving net employment income of about $25,856. MFTC tops up: $36,604 − $25,856 = $10,748/yr, paid weekly through PAYE.
• Worked example 2 — couple, 32 combined hours. One spouse works 32 hours per week at $25/hr = $41,600 gross/yr; the other is not in paid work. Combined hours pass the 30-hour test. PAYE is approximately $6,724 ($1,638 + $5,086), net is about $34,876. MFTC = $36,604 − $34,876 = $1,728/yr.
• Worked example 3 — sole parent on a higher hourly rate. A sole parent works 25 hours per week at $32/hr = $41,600 gross/yr. The same PAYE calculation yields net of $34,876 and MFTC = $1,728/yr — identical to the couple in example 2 because MFTC depends on net family income, not on hours or gross.

Once net employment income reaches $36,604/yr, MFTC = $0. A further $1,000 of gross wages adds nothing to MFTC; the credit is already exhausted. From that point families typically continue to receive Family Tax Credit and In-Work Tax Credit, which abate on a different (combined family income) schedule.

Eligibility Conditions

The Benefit Check engine evaluates the following gates against your answers. All must pass for MFTC to return a positive amount.

1. residency in {citizen, pr, qualifying_visa} — same residency basis as the rest of WFF.
2. hasAnyDependentChild = true — at least one dependent child for whom you are the principal caregiver.
3. receiving_main_benefit = false — Jobseeker Support, Sole Parent Support, Supported Living Payment, Youth Payment, and Young Parent Payment all set this true and block MFTC.
4. employment_status = "employed" — wage or salary work taxed under PAYE. Self-employed status (employment_status = "self_employed") is excluded by rule.
5. weekly_income > 0 — guards against zero-income claims even when employment_status is "employed".
6. Hours test: sole parent work_hours_per_week >= 20; couple combined >= 30.

How To Apply

MFTC is part of the standard Working for Families application. There is no separate form — IRD assesses MFTC, FTC, IWTC and BSTC together based on the answers in your WFF registration and your end-of-year income.

• Channel: myIR (Inland Revenue WFF application). New families register WFF and elect weekly, fortnightly, or end-of-year payment frequency.
• Evidence: recent payslips, employment contract or letter showing hours, bank account number, IRD numbers for both parents and every dependent child.
• Timeline: interim weekly or fortnightly MFTC starts within 1–2 pay cycles of registration; the final amount is reconciled against actual income at the IR3 / personal tax summary square-up after 31 March.
• Hours verification: IRD may request a letter from the employer confirming weekly hours. A common edge case: a couple with one full-time worker (40 hours) and one parent at home meets the 30-hour combined test even though only one of them is working — the threshold is the household total, not per-person.

Open the official MFTC source →

Rule-Based Scenarios

Three worked scenarios using the same rule logic the Benefit Check engine applies.

Scenario 1 — Galen, sole parent at 25 hrs/wk on $24/hr

Galen is a 34-year-old sole parent of one 6-year-old in Hamilton. He works 25 hours per week at $24/hr at a local supermarket — $30,000 gross/yr. He holds NZ citizenship and has been off Sole Parent Support for 7 months. The hours test passes (25 ≥ 20), employment_status is "employed", residency is fine, and he has 1 dependent child. PAYE on $30,000 is about $4,144, leaving net of $25,856. The MFTC engine returns $36,604 − $25,856 = $10,748/yr, paid weekly at roughly $206. He also receives FTC and IWTC for the child stacked on top.

Scenario 2 — Hadassa and her partner, one full-time earner

Hadassa cares for two children at home in Christchurch while her partner works 40 hours per week at $24/hr — $50,000 gross/yr. Combined hours are 40, comfortably above 30. Residency, dependents, and employment status all check out; neither receives a main benefit. PAYE on $50,000 is about $7,704, net is $42,296. Because $42,296 already exceeds the $36,604 floor, MFTC returns $0/yr. The family still receives FTC and IWTC. Hadassa initially expected an MFTC top-up because only one of them works, but the floor is compared against net family wages, not hours worked.

Scenario 3 — Kalia, self-employed parent at $25,000 net

Kalia runs a small art studio as a sole trader and earns $25,000 net for the year. She has 1 dependent child and works around 35 hours per week. Although her net income is well below the $36,604 floor and her hours easily clear 20, the rule sets her employment_status = self_employed. The MFTC engine returns $0/yr immediately on the wage-only gate — self-employed parents are excluded by design. She is still eligible for FTC and IWTC and should check the Independent Earner Tax Credit if her structure allows; a transition to PAYE through her own company in a future year would re-open MFTC eligibility.

Common Mistakes

• Self-employed parents applying for MFTC. The rule explicitly excludes employment_status = self_employed. A sole trader earning $25,000 net for the year cannot use MFTC to top up to $36,604 — IRD will claw back any interim MFTC at the square-up. Look at FTC, IWTC, and IETC instead.
• Sole parents working 19 hours per week. The threshold is 20 hours, not "around 20". A roster of 19.5 hours fails the test and zeroes MFTC for the whole year. If you are close, ask your employer for one extra hour per week to clear 20.
• Assuming the 30-hour test is per-person. For couples it is COMBINED hours. One spouse working 40 hours plus a non-working partner passes the test. Conversely, two part-timers each on 14 hours fail (28 combined). Many families miss MFTC by misreading this rule.
• Applying while still on a main benefit. Receiving Jobseeker Support, Sole Parent Support, or Supported Living Payment sets receiving_main_benefit = true and zeroes MFTC even if everything else passes. Transition off the main benefit before claiming MFTC; the two systems do not stack.
• Confusing MFTC with IWTC. IWTC is a fixed amount (around $97.50/wk for up to three children) for working families. MFTC is a variable top-up to a $36,604 floor. They serve different functions and most low-paid working families with children receive both at once — they are not substitutes.
• Treating the $36,604 floor as a gross figure. The floor is net (after PAYE). A family on a $36,604 gross wage pays roughly $5,394 in PAYE, leaving net of $31,210 — well below the floor. MFTC would top up by about $5,394 to bring net family income back to $36,604.

Related Benefits

• Family Tax Credit — the universal WFF base credit per child; works alongside MFTC and is usually the larger of the two for families with multiple children.
• In-Work Tax Credit — fixed working-family payment that stacks with MFTC; both reward employment but use different formulas.
• Best Start Tax Credit — supplementary WFF payment for children under 3; received alongside MFTC without affecting the floor calculation.
• Jobseeker Support — direct conflict: receiving Jobseeker zeroes MFTC because receiving_main_benefit = true.
• Sole Parent Support — direct conflict: SPS recipients are excluded from MFTC for the same reason; the two pathways are mutually exclusive.
• Independent Earner Tax Credit — for working adults without children. MFTC requires children; IETC requires no children. A given household will be eligible for one or the other, never both.