--- title: "Withholding Tax vs IRS: What's the Difference and Why You Get a Refund (or Pay) at Year End" description: "Withholding tax vs effective IRS: why you get refunds some years and pay others. Complete Grupo Your guide with tips to optimize IRS in 2026." lang: en json-ld: | [ { "@context": "https://schema.org", "@type": "Article", "headline": "Withholding Tax vs IRS: What's the Difference and Why You Get a Refund (or Pay) at Year End", "description": "Withholding tax vs effective IRS: why you get refunds some years and pay others. Complete Grupo Your guide with tips to optimize IRS in 2026.", "url": "https://grupoyour.com/en/blog/withholding-tax-irs-difference-refund-payment", "datePublished": "2026-04-22T22:43:18.479749+00:00", "dateModified": "2026-04-23T13:01:19.008497+00:00", "author": { "@type": "Person", "name": "Hélder Costa", "sameAs": "https://www.linkedin.com/in/helder-duarte-costa/", "url": "https://www.linkedin.com/in/helder-duarte-costa/" }, "publisher": { "@type": "Organization", "name": "Grupo Your", "logo": { "@type": "ImageObject", "url": "https://grupoyour.com/favicon.png", "width": 512, "height": 512 }, "sameAs": [ "https://www.linkedin.com/company/grupoyour/", "https://www.facebook.com/OGrupoYour", "https://www.instagram.com/grupoyour/" ] }, "image": { "@type": "ImageObject", "url": "https://xmvtahclopqwmxwnbimy.supabase.co/storage/v1/object/public/blog-images/retencao-fonte-irs-2026.jpg", "width": 1200, "height": 630 }, "mainEntityOfPage": { "@type": "WebPage", "@id": "https://grupoyour.com/en/blog/withholding-tax-irs-difference-refund-payment" }, "inLanguage": "en", "keywords": "irs, retenção na fonte, fiscalidade, reembolso, particulares", "wordCount": 425 }, { "@context": "https://schema.org", "@type": "BreadcrumbList", "itemListElement": [ { "@type": "ListItem", "position": 1, "name": "Grupo Your", "item": "https://grupoyour.com" }, { "@type": "ListItem", "position": 2, "name": "Blog", "item": "https://grupoyour.com/en/blog" }, { "@type": "ListItem", "position": 3, "name": "Withholding Tax vs IRS: What's the Difference and Why You Get a Refund (or Pay) at Year End", "item": "https://grupoyour.com/en/blog/withholding-tax-irs-difference-refund-payment" } ] }, { "@context": "https://schema.org", "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "Is the amount withheld from my salary the final tax?", "acceptedAnswer": { "@type": "Answer", "text": "No. Withholding is a prepayment. The final amount is only known after submitting the IRS declaration." } }, { "@type": "Question", "name": "Can I get a refund if I have no withholding?", "acceptedAnswer": { "@type": "Answer", "text": "Only if you have other prepayments. Without money paid to the State during the year, there is nothing to refund." } } ] }, { "@context": "https://schema.org", "@type": "BreadcrumbList", "itemListElement": [ { "@type": "ListItem", "position": 1, "name": "Home", "item": "https://grupoyour.com/en" }, { "@type": "ListItem", "position": 2, "name": "Blog", "item": "https://grupoyour.com/en/blog" }, { "@type": "ListItem", "position": 3, "name": "Withholding Tax vs IRS: What's the Difference and Why You Get a Refund (or Pay) at Year End" } ] } ] --- [Saltar para o conteúdo](#main-content) [![Grupo Your - Abertura de Empresa em Portugal](/assets/logo-2wXESdnX.png)](/en) Grupo YourServicesTools[Contacts](/en/contacts) 7 EN Personalized Proposal 1. [Home](/en) 2. [Blog](/en/blog) 3. Withholding Tax vs IRS: What's the Difference and Why You Get a Refund (or Pay) at Year End [Back to blog](/en/blog) [irs](/en/blog?tag=irs)[retenção na fonte](/en/blog?tag=reten%C3%A7%C3%A3o%20na%20fonte)[fiscalidade](/en/blog?tag=fiscalidade)[reembolso](/en/blog?tag=reembolso)[particulares](/en/blog?tag=particulares) # Withholding Tax vs IRS: What's the Difference and Why You Get a Refund (or Pay) at Year End ![Hélder Costa](/images/authors/helder-costa.png) [Hélder Costa](/en/blog/author/helder-costa)[](https://www.linkedin.com/in/helder-duarte-costa/) 22 April 2026· 2 min read Share ![Withholding Tax vs IRS: What's the Difference and Why You Get a Refund (or Pay) at Year End por Hélder Costa - Grupo Your Contabilidade](https://xmvtahclopqwmxwnbimy.supabase.co/storage/v1/object/public/blog-images/retencao-fonte-irs-2026.jpg "Withholding Tax vs IRS: What's the Difference and Why You Get a Refund (or Pay) at Year End por Hélder Costa - Grupo Your Contabilidade") ## In this article - [What is withholding tax](#what-is-withholding-tax) - [What is effective tax (IRS)](#what-is-effective-tax-irs) - [Why the two values never match exactly](#why-the-two-values-never-match-exactly) - [Why you get a refund some years and pay others](#why-you-get-a-refund-some-years-and-pay-others) - [What you can do to optimize](#what-you-can-do-to-optimize) - [IRS deadlines in 2026](#irs-deadlines-in-2026) - [Frequently asked questions](#frequently-asked-questions) - [Is the amount withheld from my salary the final tax?](#is-the-amount-withheld-from-my-salary-the-final-tax) - [Can I get a refund if I have no withholding?](#can-i-get-a-refund-if-i-have-no-withholding) Every month, when looking at your payslip, you see two main deductions: **Social Security and IRS**. But the IRS amount taken from your salary is not, in most cases, the actual tax you will pay. It's a prepayment. Understanding the difference between **withholding tax** and **effective tax** is the key to understanding why some years you get a refund and others you have to pay the State. This Grupo Your guide explains, simply, how both concepts work and what you can do to optimize your tax burden in 2026. ## What is withholding tax Withholding tax is the mechanism by which part of your monthly income is delivered to the State directly by the entity that pays you (employer, company issuing freelance receipts, bank paying interest, etc.). It works as a **prepayment** of the tax that will later be definitively calculated in the annual return. ## What is effective tax (IRS) Effective tax is the amount the taxpayer actually has to pay regarding the previous year's income. This calculation is made between **April and June**, when the IRS declaration (Form 3) is submitted, considering all income, household, deductions and [tax benefits](/en/tax-benefits-simulator "Tax Benefits Simulator"). ## Why the two values never match exactly Withholding is a provisional value based on few data points, while effective tax results from a complete analysis of your entire fiscal life. Civil status, dependents, deductible expenses, capital gains, rental income and tax benefits all affect the difference. ## Why you get a refund some years and pay others If during the year the State withheld more than the effective tax, it returns the excess (refund). If it withheld less, it charges the difference. Receiving a refund doesn't mean you "made money" on IRS - it means you lent money to the State interest-free. ## What you can do to optimize - Validate invoices on **e-fatura** by February 25th - Always provide your NIF on relevant purchases - Simulate joint vs separate taxation if married - Invest in **PPR** for the specific deduction - Adjust withholding rate with your employer if needed ## IRS deadlines in 2026 The deadline for submitting the 2025 IRS return (filed in 2026) runs from **April 1st to June 30th, 2026**. Refunds and payments are due by August 31st. ## Frequently asked questions ### Is the amount withheld from my salary the final tax? No. Withholding is a prepayment. The final amount is only known after submitting the IRS declaration. ### Can I get a refund if I have no withholding? Only if you have other prepayments. Without money paid to the State during the year, there is nothing to refund. 0 0 Share ### Get the latest tax news Subscribe to our newsletter and receive articles, tax alerts and tips directly in your inbox. Subscribe I agree to receive email communications from Grupo Your. I can unsubscribe at any time. My data will be processed according to the [privacy policy](/en/privacy-policy). ### Need help with your company? Talk to us and receive a proposal tailored to your business. 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