SAPTO & LITO Tax Offset Calculator AU 2025-26

What this calculator works out

This calculator estimates how much income tax you owe in FY 2025-26 after stacking the SAPTO (Seniors and Pensioners Tax Offset) and LITO (Low Income Tax Offset) against your tax on income, plus any unused SAPTO transferred from a low-income spouse. It surfaces the headline ATO figures:

• A single SAPTO + LITO senior typically pays no income tax up to about $33,532 of taxable income.
• A couple where both partners qualify can typically each earn up to about $30,994 before tax applies.

Medicare levy and the Medicare levy surcharge are separate and not modelled here.

The formula and where the rates come from

Resident tax brackets (FY 2025-26, post-Stage 3):

Taxable income	Rate
$0 – $18,200	Nil
$18,201 – $45,000	16%
$45,001 – $135,000	30%
$135,001 – $190,000	37%
Above $190,000	45%

LITO (Low Income Tax Offset) FY 2025-26:

• Maximum: $700 at taxable income $37,500 or below.
• Taper 1: 5 cents per dollar between $37,500 and $45,000 (drops $700 → $325).
• Taper 2: 1.5 cents per dollar between $45,000 and $66,667 (drops $325 → $0).

SAPTO (Seniors and Pensioners Tax Offset) FY 2025-26:

Status	Max offset	Rebate-income shade-in	Cut-out
Single	$2,230	$32,279	$50,119
Couple (each)	$1,602	$28,974	$41,790
Couple separated by illness (each)	$2,040	$31,279	$47,599

SAPTO tapers at 12.5 cents per dollar of rebate income above the shade-in threshold.

Both offsets are non-refundable: they can reduce tax to nil but cannot generate a stand-alone refund. SAPTO unused by a low-income partner may be transferable to the other partner — the ATO calculates the transfer on the joint assessment.

How to read the inputs

• Your taxable income — the figure from your notice of assessment. The calculator uses this as a proxy for rebate income. If you have salary-sacrificed super, negatively geared property losses or reportable fringe benefits, your rebate income will be higher — adjust the input upward to model the SAPTO taper correctly.
• Status — single, couple, or couple separated by illness. The couple parameters are per partner.
• SAPTO eligible — uncheck if you are not eligible for SAPTO (e.g. below age pension age and not a DVA pensioner). LITO still applies to most low-income residents.
• Spouse rebate income / tax payable — only relevant when status is "couple" and you want to estimate any transferable unused SAPTO from your partner.

Worked examples

1. Single senior on $30,000. Tax on income = 16% × ($30,000 − $18,200) = $1,888. LITO = $700, SAPTO = $2,230. Total offsets ($2,930) easily cover the tax — typical bill is $0.

2. Single senior at the headline tax-free line $33,532. Tax = 16% × $15,332 = $2,453. LITO = $700, SAPTO at $33,532 = $2,230 − 12.5% × ($33,532 − $32,279) = $2,073. Combined offsets ($2,773) just cover the $2,453 tax → $0 owed.

3. Single senior on $45,000. Tax = $2,453 + 16% × $11,468 = $4,288. SAPTO has tapered to roughly $643. LITO is at $700. Tax after offsets ≈ $2,945 for the year.

4. Couple — one partner $20,000, the other $50,000. Low-income partner: tax = $288, LITO = $700, SAPTO = $1,602. Unused SAPTO ≈ $1,314. The unused portion may be transferable to the higher-income partner (subject to ATO rules). The exact transfer is calculated by the ATO on lodgement — this calculator estimates the shape.

Common pitfalls

• Confusing taxable income with rebate income. SAPTO tapers on rebate income, which adds back salary-sacrificed super, total net investment losses and adjusted fringe benefits. Two seniors with the same taxable income can land in different SAPTO bands.
• Forgetting Medicare levy. SAPTO and LITO relieve income tax. Medicare levy still applies above the seniors and pensioners threshold (with its own reduction), and Medicare levy surcharge can still apply to high-income seniors without private hospital cover.
• Missing the spouse transfer. Couples often don't flag both partners as SAPTO-eligible on the return, leaving unused offset on the table. Complete both returns marked SAPTO-eligible and the ATO will calculate any transfer automatically.
• Treating offsets as refundable. Neither LITO nor SAPTO can generate a refund of its own — only any PAYG already withheld can be refunded.
• Forgetting the post-Stage 3 brackets. The first taxable bracket above $18,200 is now 16% (down from 19% pre-1 July 2024). The headline tax-free line of ~$33,532 reflects the lower 16% rate.

Related calculators

• Medicare Levy Surcharge Calculator (AU) — MLS test on top of income tax.
• HECS-HELP Repayment Calculator (AU) — repayment income test for student loans.
• Transition to Retirement Pension Calculator (AU) — TTR income at preservation age.
• Salary Sacrifice Super Calculator — pre-tax super contribution modelling.
• Working Holiday Tax Calculator (AU) — different bracket structure for WHM visa holders.

Sources:

• ATO — Seniors and Pensioners Tax Offset (SAPTO)
• ATO — Low Income Tax Offset (LITO)
• ATO — Tax rates – Australian residents
• ATO — Tax offsets for low-income earners 2024-25
• ATO — Forms and instructions: Seniors and pensioners tax offset