OBBBA.tax
A free calculator that estimates how provisions of the One Big Beautiful Bill Act may affect your taxes, starting with the 2026 tax year.
An educational estimation tool. It is not tax, legal or financial advice, and it is not affiliated with the IRS or any government agency.
- year
- 2026
- role
- Developer
- status
- Live
- tax year
- 2026
01what it evaluates
Six provisions feeding one estimate.
Each provision is a separate rule with its own limit. The calculator applies whichever apply to you and combines them.
No Tax on Tips
up to $25,000
Tips deductible for qualifying tipped workers.
No Tax on Overtime
up to $12,500
Overtime deduction for hourly workers (single filers).
Auto Loan Interest
up to $10,000
Interest on loans for new US-assembled vehicles.
personalised
estimate
Senior Deduction
$6,000
Additional above-the-line deduction, age 65 and over.
Child Tax Credit
$2,200 per child
Increased credit for each qualifying child under 17.
SALT Cap
$10,000 → $40,400
State and local tax deduction cap raised.
Figures above are the limits published by the calculator itself.
02the product
Six situations, six calculators.
Each provision is its own route with its own inputs. These are the live screens; the figures in them are the product's own default state.
01
Start from your situation
The landing page opens with six situations rather than a tax return, and routes you to the provisions that apply to you.
obbba.tax
02
A calculator per provision
Each provision has its own route and its own inputs. The tips calculator takes filing status, gross income and annual tip income.
obbba.tax/tips-calculator
03
Different rules, different inputs
Overtime is a separate deduction with its own cap, so it asks different questions rather than reusing one generic form.
obbba.tax/overtime-calculator
04
Through to the SALT cap
The SALT calculator covers the raised deduction cap for state, property and local taxes.
obbba.tax/salt-calculator
- I'm a Tipped Worker
- I Earn Overtime
- Buying a Car
- I'm 65+
- I Have Kids
- High State Taxes
03how it handles your data
Nothing to sign up for.
The product states that calculations run in the browser and that financial information is not stored. With no public repository, that is presented as the product's own claim rather than as a verified implementation detail.
No signup
Instant results, free to use.
In the browser
Calculations run client-side.
Not stored
Financial information is not retained.
04where the numbers come from
Built on published guidance.
The calculator states that it uses official IRS tax brackets, deduction amounts and phaseout rules from published revenue procedures, updated for the 2026 tax year.
OBBBA.tax is an independent tool. It is not the IRS, is not endorsed by any government agency, and its output is an estimate rather than a filing.