Capital Gains Tax Calculator built for Australian accountants
Investors and property sellers estimate their CGT before they sell — while you capture pre-sale leads with full asset details, income and ownership structure ready for a tax planning conversation.
Investment property · $750k sale · Sydney2 min ago
New
SK
Sarah K.$12,800
Shares/ETFs · $120k gain · Melbourne1 hour ago
DL
David L.$83,400
Investment property · $1.2M sale · Brisbane3 hours ago
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2025-26 AU tax brackets built in
Privacy-first lead capture
Built for Australian accountants
60-second setup
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Try the calculator
This is the exact calculator your clients use. Enter the asset details, holding period and income to see the estimated CGT update live.
yourbusiness.com.au/capital-gains-tax-calculator
Step 1 of 6 — Asset type
1Asset type
2Purchase & sale
3Associated costs
4Ownership
5Your income
6Your Details
Asset type
Your estimate
Gross Capital Gain
$225,000
Your Share of Gain
$225,000
CGT Discount Applied
$112,500
Taxable Capital Gain
$112,500
Effective CGT Rate
$19
Total$41,725
Price range: $36,718 – $46,732
Estimate valid for 30 days
This is a price indication only. Our team will be in touch to confirm the final price after assessing the job.
*This is an estimate only and not tax advice. A registered accountant will confirm your actual capital gains tax based on your full circumstances.
Step 1 of 6 — Asset type
1Asset type
2Purchase & sale
3Associated costs
4Ownership
5Your income
6Your Details
Asset type
Capital Gains Tax Calculator · powered by LeadkitPowered by Leadkit
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Know the Moment a Lead Arrives
The second someone completes your calculator, you get a celebration notification with their full details — name, contact, project info, and estimated value.
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One click to view the complete lead
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Someone just requested an estimate on your website — their details have been captured and a new lead is ready in your dashboard.
Sarah Mitchell
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Email sarah@example.com
Calculator Capital Gains Tax Calculator
Status New
Est. value $4,200
View Lead Details
I'll check it later
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Every calculator submission triggers branded emails — an instant estimate for your customer and a detailed lead notification for you.
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Updated Estimate — Revised estimate sent when you update pricing
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Tradies who stopped chasing leads and started winning them. In their own words.
“
Set it up Tuesday. By Friday I had three quote requests in my inbox. One turned into a $14,200 bathroom job. Pays for itself ten times over.
4 → 31
Quote requests per month
$74,400
In booked jobs · 90 days
5×
Pipeline vs. before
DK
Dan K.
Bathroom Renovator · Brisbane · On Leadkit since Jan 2026
Return on investment
Stop answering CGT questions for free
Every CGT enquiry you answer manually is time away from billable advisory work. Let the calculator pre-qualify investors 24/7 while you focus on tax planning engagements.
300
35%
$25k
With Leadkit, you'd earn
$578k/month extra
Based on a 8.3× uplift over a plain contact form, applied to your inputs.
All prices in AUD · GST inclusive · Cancel any time, no calls or forms
Common questions
What others asks before signing up?
How is capital gains tax calculated in Australia?
Capital gains tax is calculated by subtracting the cost base (purchase price plus associated buying, selling and improvement costs) from the sale price to determine the capital gain. If the asset was held for more than 12 months, individuals can apply a 50% CGT discount. The discounted gain is added to your other taxable income and taxed at your marginal rate. This calculator provides an estimate — an accountant will confirm your actual CGT based on your full circumstances.
How does the 50% CGT discount work?
If you hold an asset for at least 12 months before selling, individuals and trusts can reduce the capital gain by 50% before adding it to taxable income. For example, a $200,000 capital gain becomes $100,000 taxable after the discount. SMSFs receive a one-third discount instead (effectively reducing the tax rate from 15% to 10%). Companies are not eligible for any CGT discount.
Is my home exempt from CGT?
Your main residence (the home you live in) is generally exempt from CGT under the main residence exemption. However, if you rented part of it, used it for business, or were absent for more than six years, a partial exemption may apply. Investment properties, holiday homes and vacant land are not exempt. An accountant can confirm whether your property qualifies.
How accurate is this calculator? Is this tax advice?
This calculator uses the 2025-26 Australian marginal tax brackets, Medicare levy and the 50% CGT discount rule to produce an estimate. It does not account for capital losses, foreign income, private rulings or complex trust structures. This is not tax advice — a registered accountant will confirm your actual capital gains tax based on your full circumstances.
Can I embed this CGT calculator on my accounting website?
Yes. Leadkit provides a one-line embed code that works on WordPress, Webflow, Squarespace, Wix and Shopify. The calculator inherits your branding and sends leads directly to your Leadkit dashboard.
What information do I get when someone submits the calculator?
You receive the investor's name, email, phone, location and a full summary of their inputs — asset type, purchase price, sale price, costs, holding period, income and estimated CGT. Leads appear in your Leadkit dashboard scored and ready for follow-up.
I don't have a website — can I still use this?
Yes. Every Leadkit calculator has its own hosted landing page at a unique URL. Share the link on social media, in email campaigns or via QR codes. No website required.
Is Leadkit really free?
Yes. Free lets you add up to 3 calculators to your website and receive 10 leads per month — no credit card. Every lead beyond the cap is still captured and held for you; upgrading to Pro ($29/mo) opens them all retroactively and removes the cap.
Do I need to know how to code?
No. You get an embed code (one line of HTML). Paste it into your website builder — Wix, Squarespace, WordPress, or any custom site. That's it.
How accurate are the price estimates?
You configure the calculator formulas to match your actual pricing. Leadkit provides the framework; you set the numbers. Estimates can be as detailed or as rough as you like.
What happens with lead data?
All lead data is stored securely in your workspace. You own it. We never sell or share your leads with anyone.
Can I use Leadkit as an agency for multiple clients?
Yes — our Agency plan lets you create and manage separate workspaces for each of your clients, all from one dashboard.
What's the difference between the plans?
Free: up to 3 calculators, 10 leads/month (over-cap leads held + locked until upgrade). Pro: unlimited leads, unlimited calculators, white-label, branded email sending, analytics, email templates. Agency: everything in Pro plus multi-workspace management.
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Start capturingpre-sale investor leads
Set up your capital gains tax calculator in 60 seconds. Free plan available — no credit card required.
Understanding capital gains tax costs in Australia
The section below is for homeowners researching capital gains tax costs. We break down how prices are calculated, show current Australian averages, and answer the questions we hear most. Every number reflects real 2026 rates from Australian tradies — not marketing fluff.
Based on AU market ratesGST includedUpdated for 2026
For investors and sellers
Estimate your CGT before you sell
Get an instant capital gains tax estimate based on your asset details and income. No sign-up needed — see your numbers in under a minute.
Free instant CGT estimate
50% CGT discount automatically applied
2025-26 marginal tax brackets included
Connect with an accountant for tax planning
For accountants
Capture pre-sale investor leads with full asset details
Every submission includes the investor's asset type, cost base, holding period and income — so you can prioritise the leads most likely to need CGT advisory.
Your firm name, branding and contact on every PDF
Lead score helps prioritise callbacks
Free for up to 5 calculators — upgrade for unlimited
Works on WordPress, Webflow, Squarespace, Wix and Shopify
How it works
How this capital gains tax calculator is calculated
This calculator produces an estimate of capital gains tax, not professional tax advice. It uses the 2025-26 Australian marginal tax brackets and does not account for capital losses, foreign income or complex trust structures.
GST handling: Capital gains tax estimates do not include GST. CGT is a component of income tax, not a separate levy.
1
Calculate gross capital gain
The sale price minus the cost base (purchase price + buying/selling costs + capital improvements) gives the gross capital gain. For joint ownership, the gain is split 50-50.
gain = sale - (cost_base + costs + improvements)
2
Apply CGT discount
If the asset was held for more than 12 months, individuals receive a 50% discount and SMSFs receive a one-third discount. Assets held under 12 months receive no discount.
3
Add to taxable income
The discounted capital gain is added to the investor's other taxable income for the financial year to determine the total taxable income.
4
Calculate marginal tax
Tax is calculated on the combined income using the 2025-26 Australian marginal rates (0%, 16%, 30%, 37%, 45%) plus a 2% Medicare levy. The CGT payable is the difference between tax on total income and tax on other income alone.
CGT = tax(income + gain) - tax(income)
5
SMSF rate (if applicable)
Self-managed super funds pay a flat 15% on taxable capital gains (10% effective after the one-third discount for assets held over 12 months).
Indicative CGT amounts based on 2025-26 marginal tax brackets, 2% Medicare levy and the 50% CGT discount for assets held over 12 months. Actual CGT depends on your full tax position.
Average costs by job type across Australia, 2025-26
Job type
Low
Average
High
Unit
Individual · $80k income · $100k gain · >12mo
50%
$100,000
$16,000
est. CGT
Individual · $80k income · $100k gain · <12mo
None
$100,000
$35,150
est. CGT
Individual · $150k income · $250k gain · >12mo
50%
$250,000
$55,375
est. CGT
Joint 50-50 · $80k each · $200k gain · >12mo
50%
$200,000
$19,400
est. CGT (per person)
SMSF · $500k gain · >12mo
1/3
$500,000
$50,000
est. CGT
Individual · $45k income · $50k gain · >12mo
50%
$50,000
$5,950
est. CGT
Source: ato.gov.au, moneysmart.gov.au
CGT is calculated at the federal level — there is no state variation. However, property values (and therefore capital gains) are typically higher in Sydney and Melbourne.
