Online Signature Tool

Business Idea: Start An Online Signature Tool in 2026

Updated: May 2nd, 2026

Avg Monthly Revenue
$38.3K
Avg Startup Costs
$16.8K
Score
73
Market Size
Avg Revenue
Min Revenue
$20K/month
Max Revenue
$55K/month
Avg Days To Build
185 days

Managing contracts or closing deals online can be cumbersome without the right tools. Enter the online signature tool. This business idea revolves around creating a software that allows people to sign documents digitally, making it easier and faster to process contracts, agreements, and legal forms.

Your task involves developing a user-friendly platform that offers secure, legally binding electronic signatures. This service appeals to a wide range of industries, from real estate to legal and freelance work, replacing the need for face-to-face signings or physical paperwork.

Imagine the potential market when you offer something efficient and reliable for businesses looking to streamline their operations. The initial setup demands a solid understanding of software development and encryption technology, but the payoff includes consistent demand and scalability.

For anyone interested in technology and improving business efficiencies, launching an online signature tool might be the perfect venture.

Revenue & Profitability

How much do online signature tools make?

Startup Costs

How much does it cost to start an online signature tool?

  • It can cost as low as to start an online signature tool.
  • It can cost as high as $75,000 to start an online signature tool.

Learn more about the costs of an online signature tool.

Examples Of Successful Online Signature Tools

Successful online signature tool businesses and case studies

Discover how Solva, the multiproduct company behind Newoldstamp and MySignature, successfully transformed MySignature from a simple email signature generator to a marketing hub, attracting over 500k users worldwide and generating almost $700K in annual revenue, all while remaining fully bootstrapped.

$55K Monthly Revenue
$10K Startup Costs
Read by 13,691 founders

PDFLiner is an electronic document management platform that allows users to create and edit PDF files, add electronic signatures, fill out forms, and manage electronic documents, and has reached $40K MRR and is on track to do $500K ARR this year, with more than 80,000 users, and plans to expand its forms catalog and improve its functionality to deal with the B2B segment.

$40K Monthly Revenue
$1K Startup Costs
Read by 9,852 founders

See full list of successful online signature tools.

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