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NumbersForClients provides client-facing tax, retirement, investment and small-business calculators that US accounting and advisory firms embed on their own websites, with lead capture that sends the client's inputs and results to the firm.

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Not advice. Calculators on this site and on our customers' sites produce estimates for illustration from the inputs entered. They are not tax, legal, accounting or investment advice and do not create a client relationship. Firms remain responsible for their own advice and marketing, including Circular 230 written-advice and advertising standards, state board rules, and for investment advisers the SEC Marketing Rule (Rule 206(4)-1) or state requirements. Full disclaimer.

Tax figures: tax year 2026, last verified 2026-10-17, each with its IRS or SSA source on the figures page. US market only; prices in USD.