What is the main functional difference between Billingengine MCP and TapTax?

Billingengine MCP is categorized under Finance & Fintech and uses a local stdio subprocess. TapTax belongs to Finance & Fintech and uses an install path we have not confirmed yet. Pick Billingengine MCP for finance & fintech work and TapTax for finance & fintech.

How do I install Billingengine MCP or TapTax in Claude Desktop, Cursor, or Windsurf?

Copy the mcpServers block from the config section on this page into your client's config (for example claude_desktop_config.json or ~/.cursor/mcp.json), then fully restart the client. TapTax has no confirmed install command yet — follow its own setup instructions.

Are Billingengine MCP and TapTax free to use, or do they require API keys?

Billingengine MCP is listed as a paid service. Auth: api key required. TapTax is listed as free. If a server needs environment variables such as API keys, define them under the env key in your client's MCP config.

Can I run both Billingengine MCP and TapTax at the same time in my AI client?

Yes. MCP clients support multiple servers: add billingengine-mcp and taptax as separate keys in the same mcpServers object, and your assistant will call tools from either one.

Which MCP server has higher directory engagement and quality ratings?

On AllMCPs, Billingengine MCP has a quality signal of 78/100 (Great) with 3 views, 0 installs and 0 GitHub stars. TapTax has 52/100 (Good) with 0 views, 0 installs and 0 GitHub stars.

Billingengine MCP vs TapTax — MCP Server Comparison

Billingengine MCP vs TapTax — MCP Server Comparison | AllMCPs

Feature & specification comparison

Rows where the two servers differ are marked.

Spec	Billingengine MCP	T TapTax
Category	Finance & Fintech	Finance & Fintech
Quality signal	78/100 · Great	52/100 · Good
Install command	Confirmed	Not confirmed yet
Transport	Local subprocess (stdio)	—
Auth	API key required	Not declared
Pricing	Paid service	Free
Required env vars	`BILLINGENGINE_API_KEY`	None listed
Verified owner	Verified	Community listing
GitHub stars	0	0
Directory activity	3 views 0 installs 0 upvotes	0 views 0 installs 0 upvotes
Tools	10	49
Full listing	View Billingengine MCP	View TapTax

Tools & capabilities

Billingengine MCP tools 10

find_customersSearches customers by company, name or email
create_customerCreates a customer
update_customerChanges a customer
create_invoiceCreates a **draft** invoice for a customer
update_invoiceChanges a draft invoice
list_invoicesLists invoices, filtered by status, customer, number or date
get_invoiceReturns one invoice with items and payment status
download_invoiceSaves the PDF or the XML e-invoice to your Downloads folder
record_paymentRecords a payment for sent invoices
list_paymentsLists payments, optionally for one invoice

TapTax tools 49

estimate_self_employed_taxEstimate UK income tax and Class 4 National Insurance for a sole trader from turnover and allowable expenses, with the take-home figure, effective and marginal rates, payments on account and tailored tips, from HMRC's published rates for the tax year. Works from the figures given, without a TapTax account.
check_tax_codeCheck whether a UK PAYE tax code (e.g. 1257L, BR, K475, 1257L W1/M1) looks right for a salary and circumstances, explain what it means, and estimate any over- or under-payment. Flat-rate codes (BR, D0, D1) are only judged when hasMultipleJobs is known; without it the verdict is needs_info. Returns a verdict tier; refund figures are estimates, not amounts owed.
check_mtd_statusSay whether and when Making Tax Digital for Income Tax applies to someone, from their qualifying income: self-employment turnover plus property income, before expenses, as on their Self Assessment return. Employment and pension income do not count.
get_mtd_deadlinesList the standard Making Tax Digital quarterly update periods and deadlines for a tax year, and which one is next. Updates are cumulative from 6 April.
calculate_take_home_payCalculate take-home pay from a UK salary for a tax year: income tax by band (England, Wales and Northern Ireland, or Scotland), employee National Insurance, student loan repayment and pension contributions, with yearly, monthly and weekly take-home and the employer National Insurance and total cost to the employer.
calculate_gross_salary_for_take_homeWork out the gross UK salary needed to take home a given amount a year after income tax, employee National Insurance, student loan and a pension percentage, for a tax year (net to gross).
calculate_salary_sacrificeCompare pay before and after a salary sacrifice for a pension or an electric company car: income tax, National Insurance and student loan saved, employer National Insurance saved and passed back, benefit-in-kind tax for a car, the drop in take-home pay, and for a pension the cost per pound added and the saving against paying in from net pay.
calculate_pro_rata_salaryWork out a part-time salary from the full-time salary and the hours or days worked compared with full time, with the take-home pay on the pro rata salary for a tax year.
convert_hourly_rate_to_salaryConvert an hourly rate to the annual salary it adds up to for the hours a week and paid weeks a year given, with take-home pay on that salary for a tax year.
convert_salary_to_hourly_rateConvert an annual salary to its gross hourly rate and the take-home pay per hour, for the hours a week and paid weeks a year given, in a tax year.
calculate_student_loan_repaymentCalculate yearly, monthly and weekly UK student loan repayments on an income for a repayment plan (Plan 1, 2, 4 or the postgraduate loan) in a tax year.
calculate_child_benefit_chargeCalculate the High Income Child Benefit Charge on an adjusted net income and the Child Benefit received in a tax year: the charge, the benefit kept, and the income the charge starts from.
+37 more on the listing page

Ready-to-paste client configs

Paste either block (or both) into your client config, e.g. claude_desktop_config.json or ~/.cursor/mcp.json. We only show a config when the install command is confirmed.