Tax Resources for Accountants and Small Businesses (U.S.)
Form W-9 is an Internal Revenue Service (IRS) document used by U.S. persons to provide their Taxpayer Identification Number (TIN) to a requester. Businesses use this form to report payments such as nonemployee compensation,...
What Is a First B Notice? When you file Form 1099s and the Internal Revenue Service (IRS) identifies a vendor’s or payee’s name and Taxpayer Identification Number (TIN) combination as mismatched, you may receive...
What Is Adjusted Gross Income (AGI)? Adjusted Gross Income (AGI) is an IRS-defined measure of income calculated as gross income from all taxable sources minus specific adjustments allowed under the Internal Revenue Code. AGI...
What Is Modified Adjusted Gross Income (MAGI)? Modified Adjusted Gross Income (MAGI) is an IRS-defined calculation used to determine eligibility for several federal tax benefits. Although MAGI is based on Adjusted Gross Income (AGI),...
What is an IRS “B” Notice? A “B” Notice is a backup-withholding alert you must send when you receive a CP2100 or CP2100A notice from the IRS. It means the name and taxpayer identification number...
This page provides a month-by-month directory of official IRS Revenue Ruling PDFs that publish the Applicable Federal Rates (AFR) and related tax reference rates. For a detailed explanation of how AFR works, what short-,...
Like Share Print Form 1040, U.S. Individual Income Tax Return Annual income tax return filed by citizens or residents of the United States. Instructions for Form 1040 Forms and Schedules for Form 1040 2013...
Applicable Federal Rate (AFR) – Explanation and IRS Monthly Updates The Applicable Federal Rate (AFR) is the minimum interest rate that the Internal Revenue Service (IRS) allows for private loans and other financial transactions...
The Applicable Federal Rate (AFR) is updated every month by the Internal Revenue Service (IRS). For 2025, AFR levels reflect the continuing adjustment of federal interest rates in response to broader economic trends and...
This article explains Form 1099-K using only official guidance from the Internal Revenue Service (IRS). It is designed for U.S. small businesses, online sellers, accountants, and platforms that process payments for goods and services....
If you’ve received a CP 2100 Notice from the IRS, don’t panic — but don’t ignore it either. The notice means the IRS found a name and taxpayer identification number (TIN) mismatch or a...
Authority: Internal Revenue Service (IRS), U.S. Department of the Treasury Official source: https://www.irs.gov/filing/e-file-information-returns Overview Beginning January 1, 2024, the Internal Revenue Service (IRS) requires that any person or business filing 10 or more information...
Based on official IRS publications and announcements (updated November 2025). Overview The One Big Beautiful Bill Act (OBBBA), enacted in 2025, introduced several tax provisions administered by the Internal Revenue Service (IRS). The Act...
Download the official IRS Form 1040 for 2025 Download Free Federal Income Tax Form 1040 (Excel Spreadsheet) From Excel1040.com – The original, fully functional Excel-based Form 1040 spreadsheet. Includes built-in IRS calculations, all 2025...
If you receive a CP2100 or CP2100A Notice from the IRS, it means some of the name and taxpayer identification number (TIN) combinations on your Forms 1099 don’t match IRS or Social Security Administration...
Updated: October 30, 2025 Understanding the IRS Second B Notice When you issue Form 1099s to vendors or contractors, the IRS expects each payee’s name and taxpayer identification number (TIN) to match official records....
Introduction Receiving a letter from the IRS can be stressful, especially when it says “CP 2100 Notice” or “B Notice.”Don’t panic — this notice does not mean you are being audited or owe money.It...
List of Principal Business Activities and codes that classify a company by the type of activity that is needed by the Internal Revenue Code. They are based on the North American Industry Classification System.
2021 California Income Tax Calulator Select your filing status Single Married/RDP filing jointly Married/RDP filing separately Head of Household Qualifying widow(er) with dependent child Enter line 19 of 2020 Form 540 or Form 540NR...
IRS’s National Standards for Allowable Living Expenses IRS Collection Financial Standards are intended for use in calculating repayment of delinquent taxes. National Standards have been established for five necessary expenses: food, housekeeping supplies, apparel...