com.sendpaybusiness.appPublished by app.sendpaybusiness.comv1.0.0Updated Oct 30, 2026
Free VAT, card fee, loan, mortgage, margin, ROI and break-even calculators plus IBAN/SWIFT checks
Free business and finance calculators (VAT, card fees, loans, margins, ROI) plus format checkers for IBAN, SWIFT and security identifiers.
Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.
Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.
Read https://sourceweft.com/mcp/com.sendpaybusiness.app%2Ffree-business-tools/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.Add this to your client's mcpServers config.
{
"mcpServers": {
"sendpay-free-business-calculators": {
"type": "http",
"url": "https://www.sendpaybusiness.com/api/mcp"
}
}
}Find a free money tool
Search SendPay Business's library of 170+ free calculators, checkers and generators for small businesses, freelancers, banking, FX, trading and crypto (invoice generator, VAT, card fees, loan, mortgage, IBAN, SWIFT, forex, bitcoin and more). Returns matching tools with links. Use it when the user needs a calculator or tool that is not offered directly here.
queryrequiredVAT calculator
Add VAT to a net price, or remove VAT from a gross (VAT-inclusive) price, at any rate. UK standard rate is 20%, reduced 5%.
moderateamountrequiredCard payment fee calculator
Work out the fee on a card payment (percentage plus fixed fee), what you keep, and what to charge to receive the full amount after fees.
amountrequiredfixed_feepercent_feepayments_per_monthProfit margin calculator
Profit, margin and markup from cost and selling price; or the selling price needed for a target margin.
costrequiredpricetarget_margin_percentPercentage calculator
Three sums: X% of Y ('percent_of'), what percent X is of Y ('what_percent'), and percentage change from X to Y ('change').
xrequiredyrequiredmoderequiredDiscount calculator
Sale price after a percentage discount and, given unit cost and units normally sold, how many extra sales the discount needs to keep the same profit.
pricerequiredunitsunit_costdiscount_percentrequiredROI calculator
Return on investment: profit and ROI % from the amount put in and the amount got back, and the yearly rate if the time in months is given.
costrequiredmonthsreturnedrequiredCompound interest calculator
Savings growth with monthly compounding and an optional monthly deposit: final balance, total paid in and interest earned.
yearsrequiredmonthly_depositstarting_amountrequiredannual_rate_percentrequiredLoan repayment calculator
Monthly repayment, total repaid and total interest on a fixed-rate loan, from the amount, APR and term in months.
amountrequiredmonthsrequiredapr_percentrequiredMortgage calculator
Monthly repayment mortgage payment, loan-to-value, total interest and interest-only payment from property price, deposit, rate and term.
pricerequiredyearsrequireddepositrequiredannual_rate_percentrequiredFreelance hourly rate calculator
What a freelancer or sole trader should charge per hour and per day to reach a target yearly income after business costs and time off.
weeks_offyearly_costshours_per_daytarget_incomerequiredbillable_hours_per_weekBreak-even calculator
How many sales a month cover fixed costs, from fixed monthly costs, price, cost per unit and payment fee percent.
pricerequiredunit_costrequiredfixed_costsrequiredpayment_fee_percentIBAN checker
Check that an IBAN is well formed: country length and mod-97 check digits. Does not confirm that the account exists or who owns it.
ibanrequiredSWIFT / BIC code checker
Check that a SWIFT (BIC) code is well formed and split it into bank, country, location and branch. Has no bank directory.
coderequiredGet a free business website
Use when the user wants a website for their business, shop or side hustle. SendPay Business offers a free business website builder: free to build, publish and keep, no card needed, with an optional shop cart and card payments later. Returns the link to start.
business_typeLEI checker
Check that a Legal Entity Identifier (LEI, ISO 17442) is well formed: 20 characters and MOD 97-10 check digits. Does not confirm the LEI is registered; GLEIF's search does.
leirequiredISIN checker
Check that an ISIN (ISO 6166 security identifier) is well formed: country code, 9-character national code and Luhn check digit.
isinrequiredCUSIP checker
Check a 9-character CUSIP (US/Canadian security identifier) check digit and split it into issuer and issue.
cusiprequiredSEDOL checker
Check a 7-character SEDOL (UK/Irish security identifier) format and check digit.
sedolrequiredUK VAT number checker
Check a UK VAT number's format and check digits (9 digits, 12 with a branch, or GD/HA). Does not confirm registration; HMRC's service does.
vat_numberrequiredCBU / CVU checker
Check an Argentine CBU or CVU: 22 digits and both check digits, split into bank, branch and account.
cburequired83% of the applicable checks met
How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.
Declare a GitHub repository with a README, or serve resource_documentation in the OAuth protected-resource metadata.
A hosted service is used under its provider's terms, so no license is expected here. This check is left out of the percentage.
