Check

Check supplies the technology, operations, and support needed to scale payroll with ease through their embedded payroll platform.

Est.2015
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Compliance
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Finance
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CheckCheck

About Check

About Check

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Check Technologies, Inc. is a leader in embedded payroll solutions, providing the infrastructure necessary for businesses of all sizes to manage payroll efficiently. With a focus on innovation, Check developed a powerful API that enables partners to integrate comprehensive payroll services directly into their platforms. This allows businesses to offer their customers a seamless payroll experience that includes everything from money movement and tax calculation to real-time payments and benefits integration. Founded by industry experts, Check has transformed the payroll landscape by simplifying complex operations and enhancing compliance processes. The company serves a diverse range of partners, from startups to established enterprises, by allowing them to customize payroll solutions that fit their specific needs. With deep visibility and robust support, Check safeguards its partners against risks associated with payroll management.

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APIBenefitsCompliance
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B2BFinanceHR

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Historical Performance

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Business Case

16th Amendment Led to a 1% Tax on Incomes, Rising to 83% by 1917

The U.S. faced economic disparity through protectionist tariffs that benefitted Northern manufacturers but imposed higher prices on Southern and Western farmers. These tariffs created a regressive tax, as poor consumers paid a higher percentage of their income in taxes, exacerbating tensions across different regions. A solution emerged as the Populist movement pushed for a progressive income tax, gaining support from working and middle-class Americans. Political advocates, including President Taft, pushed for change, resulting in the proposal of the 16th Amendment. This amendment allowed for the taxation of incomes without apportionment among the states. With ratification in 1913, the first constitutional income tax was introduced, starting at 1% on both individual and corporate incomes with higher rates for significant earnings. During World War I, the tax rate peaked at 83% for the wealthiest. This transition positioned income tax as the main source of federal revenue, eventually phasing out tariffs.

Key Results
  • 1% normal tax rate on incomes
  • 6% surtax on incomes over $500,000
  • 83% highest rate during World War I

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Mar 31, 2026
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Business Case

Withholding Increased Tax Filers from 4M in 1939 to 50M in 1945

In the early 20th century, payroll taxes in America posed significant challenges. Initially, the burden fell on employees to report and pay taxes, which not only complicated the process but also resulted in underreporting. The system faced limited scrutiny due to its impact on a small percentage of earners and low tax contributions. The Underwood-Simmons Tariff Act of 1913 was a legislative attempt to enforce employer withholding, introducing complex regulations that were met with corporate opposition and repealed by 1917. The Social Security Act of 1935 successfully implemented employer withholding, leveraging lessons from past failures and employer feedback. World War II expanded tax withholding as the U.S. needed funding for the war, enacting the Current Tax Payment Act of 1943. This act led to a dramatic increase in tax filers, from 4 million in 1939 to 50 million in 1945. The system mitigated inflation and has been consistently operational ever since, fundamentally altering Americans' engagement with annual taxes.

Key Results
  • 4 million individual tax returns in 1939
  • 50 million individual income tax returns in 1945
  • Federal spending grew from $9 billion in 1940 to over $98 billion in 1945

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Mar 31, 2026
Self Reported

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