What the One Big Beautiful Bill Act Means for Moms and Family Taxes in 2026

In July 2025, the One Big Beautiful Bill Act (OBBBA) was signed into law. If you have not heard of it, you are not alone — most of the coverage has been buried in financial jargon that reads like it was written for accountants, not for moms trying to figure out if their tax situation changed. It did change. Here is what actually matters for your family.

What This Law Is and Why It Matters Now

The OBBBA made many of the 2017 Tax Cuts and Jobs Act provisions permanent — meaning they no longer expire. It also introduced several new changes that took effect for the 2025 tax year (the taxes you will file in 2026) and beyond.

For families specifically, the changes that matter most involve the child tax credit, standard deduction amounts, and charitable giving rules.

Change 1: The Child Tax Credit Is Now Permanently Higher

Before the OBBBA, the elevated Child Tax Credit from 2017 was set to drop back to $1,000 per child in 2026. That drop is now permanently prevented.

If you have two kids under 17, you are keeping $4,000 in credits that would have been cut in half without this law. For moms who are the primary earner or co-earner in a household, this is real money that was at risk.

What you should do: Verify your withholding with your employer. If you have not updated your W-4 in the last two years, the child credit changes may affect whether you are withholding too much or too little.

Change 2: The Standard Deduction Stayed Elevated (and Adjusts for Inflation)

The OBBBA permanently extended the higher standard deductions: Single filers $15,000 (2025), Married filing jointly $30,000 (2025), Head of household $22,500 (2025). These amounts adjust for inflation going forward.

If you are a single mom filing as Head of Household, your standard deduction is $22,500. That is a significant reduction in your taxable income without needing to itemize a single receipt.

Itemizing deductions (mortgage interest, charitable contributions, state and local taxes) only makes sense if your deductions exceed these thresholds. For most families earning under $150,000, the standard deduction continues to be the better choice.

What you should do: If a tax preparer or software suggests itemizing, ask them to run both calculations. For most moms, the standard deduction wins.

Change 3: The New Charitable Giving Floor (This One Catches People Off Guard)

This is the change that has quietly surprised the most people. Under the OBBBA, charitable contributions are only deductible if they exceed 0.5% of your Adjusted Gross Income (AGI). The first 0.5% of your AGI donated to charity is no longer deductible — even if you itemize.

Example: If your AGI is $80,000, the first $400 you donate to charity this year is not deductible. Your $401st dollar and beyond can be deducted (if you are itemizing).

For most families who give $500-1,500 to charity annually, this change reduces — but does not eliminate — the tax benefit of giving.

What you should do: If charitable giving is part of your financial plan, calculate your 0.5% floor ($AGI × 0.005) and factor that into your donation strategy. If you give small amounts to multiple organizations, consider consolidating into fewer larger gifts to maximize deductibility.

Change 4: SALT Deduction Cap Increased (Relevant If You Are in a High-Tax State)

The State and Local Tax (SALT) deduction cap was raised from $10,000 to $40,000 for households earning under $500,000, phasing out above that level.

If you own a home in a high-property-tax state — California, New York, New Jersey, Illinois, Texas — this change may make itemizing deductions worth it for the first time since 2017. The combination of mortgage interest + state income tax + property taxes may now exceed your standard deduction.

What you should do: If you live in a high-tax state and own a home, ask your tax preparer to calculate your itemized deductions using the new $40,000 SALT cap. It is worth checking before assuming the standard deduction is still the right choice.

Change 5: The 401(k) Contribution Limit Increased

The OBBBA permanently indexed retirement contribution limits to inflation, resulting in the following 2026 limits: 401(k), 403(b), 457 plans $24,500, Catch-up contribution (age 50-59 or 64+) Additional $8,000, Catch-up contribution (age 60-63 only) Additional $11,250, IRA contribution limit $7,500, IRA catch-up (age 50+) $8,600.

The higher 401(k) limits create more room to reduce your taxable income. Every dollar contributed to a traditional 401(k) reduces your AGI — which affects not just your tax bill, but also income-based calculations for things like college financial aid, Medicare premiums, and certain tax credits.

What you should do: If your employer offers 401(k) matching and you are not hitting the match, that is your first priority — it is a 50-100% instant return on your contribution. Once you are capturing the full match, increase your contribution by 1% per year.

The Three Things to Do Before Year-End

1. Review your withholding. The IRS withholding calculator (irs.gov/W4app) is free and takes 10 minutes. If you had a big refund last year, you are over-withholding — giving the IRS an interest-free loan. If you owed a large amount, you are under-withholding and may face penalties.

2. Max out tax-advantaged accounts if possible. HSA contributions ($4,300 for self-only coverage, $8,550 for family in 2025) are triple tax-advantaged: deductible going in, tax-free growth, tax-free withdrawal for healthcare. If you have an HSA-eligible health plan and are not contributing, this is likely the highest-value tax move available to you.

3. Check your charitable giving math. Calculate your 0.5% AGI floor and plan your Q4 giving accordingly. If you are close to the itemizing threshold, consider bundling two years of charitable gifts into one year (a strategy called gift bunching) to maximize deductibility.

This law changes enough that it is worth reviewing your tax strategy even if nothing in your personal life changed this year. The families who adjust proactively will pay less than those who find out in April.