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Tax Calculations apps and integrations
Tax Calculations apps help estimate federal, state, income, National Insurance, and social-contribution taxes, then show take-home pay, refunds, amounts owed, and payroll outcomes. Listings also cover tax documents, 1040 PDFs, filing options, deductions, VAT, deadlines, payments on account, and receipt categorisation for tax returns.
13 apps
Top tax calculations apps
Open full directory →Financial-Services
Aiwyn Tax (formerly Column Tax)
By Aiwyn, Inc.
Estimate your federal & state taxes using Aiwyn's tax engine that's filed over 1 million returns. Give Claude your tax documents (e.g. W-2s) and get a 1040 PDF back.
Tools: 10
Financial-Services
Intuit TurboTax
By Intuit
Get fast federal tax estimates and discover filing options with Intuit TurboTax-powered tools. Start with a simple tax estimator that guides you through the info you need and see your refund or amount owed as you go. When you're ready for expert help, connect with trusted tax pros. Confident tax filing starts here. By connecting, you agree to the Intuit TurboTax Terms of Service and acknowledge Intuit's Global Privacy Statement.
Tools: 1 · Prompts: 4
Finance
REPSLog
By CarmelTech LLC
REPSLog helps real estate professionals log and review the work hours that count toward Real Estate Professional Status (REPS) for U.S. tax purposes. Connect your REPSLog account and you can add a time log in plain language (for example, "log 2 hours showing the Oak Street property today"), then ask for your hours back by property, category, participant, or date range. The connector can create a time log and read your existing data: list your properties, categories, and participants, pull individual logs, and get summaries of total hours. Everything is scoped to your own authenticated REPSLog account. It does not access or share other users' data. Requires a REPSLog account with an active Premium subscription. That subscription is purchased separately in the standalone REPSLog mobile and web apps, not through ChatGPT. Logs created here sync to those apps, so your records stay in one place for IRS documentation.
Prompts: 3
Finance
TaxHeaven
By TaxHeaven Ltd
TaxHeaven gives self-employed workers, freelancers, sole traders, and landlords instant UK tax answers using HMRC-published rates, right inside ChatGPT. 8 tools cover the full self-employed tax journey: • Calculate income tax, National Insurance, and take-home pay (England and Scotland) • Check if Making Tax Digital (MTD) applies to you and when it starts • See all your tax deadlines with countdown timers • Work out your payments on account and how much to save monthly • Add or remove VAT, compare the Flat Rate Scheme, check registration thresholds • Find out if an expense is tax-deductible under HMRC rules • Calculate capital allowances on business equipment and vehicles • Scan receipts and categorise them for your tax return All calculations use official HMRC rates for 2024-25 through 2026-27. No sign-up required, no data stored, MTD compliance completely free from HMRC-recognised software.
Prompts: 3
Finance
Voder
By Windy Road Technology
Your Xero, in plain English. Has a customer paid you. Who owes you money. Your cash position. What's outstanding. All in plain language, without opening Xero. Read-only: Voder looks, never touches.
Prompts: 3
Finance
TaxMadeEazy: Rideshare Ded
By TEKPartner
Who it's for: U.S. rideshare and gig economy drivers — Uber, Lyft, DoorDash, Instacart, and similar platforms. Whether you're a full-time driver or earning on the side, TaxMadeEazy helps you discover deductions you might be missing. What it does: Explore an interactive checklist of IRS-sourced tax deductions tailored to rideshare and gig drivers. Mark deductions as "already claimed" or "didn't know about" and watch your estimated savings grow in real time with our savings meter. How it works: - Browse deduction categories (mileage, vehicle expenses, phone & technology, health insurance, and more) - Mark each deduction to build your personalized summary - See estimated savings based on your selections - Connect with a verified CPA who specializes in rideshare taxes for professional guidance What it doesn't do: TaxMadeEazy is informational only. It does not file taxes, calculate refunds, or provide professional tax advice. All deduction information is sourced from IRS publications and is provided for educational purposes. Always consult a qualified tax professional before making tax decisions. Free, no signup required. Start exploring your deductions immediately — no account creation, no payment, no strings attached.
Prompts: 1
Finance
SueldoNeto
By Victor Delgado
Calcula tu salario neto a partir del bruto en España. Introduce tu salario anual y obtén un desglose visual con las retenciones de IRPF (estatal y autonómico) y Seguridad Social. Incluye: • Tramos de IRPF actualizados para 2025 • Tasas específicas por comunidad autónoma • Deducciones por hijos a cargo • Opción de 12 o 14 pagas • Coste total para la empresa
Prompts: 1
Finance
Obolus
By Obolus Finance Apps
Obolus helps users calculate net income from gross salary and compare salary, tax, and social contribution outcomes across supported countries. The app supports detailed payroll calculations for one or two persons, cross-country net income comparisons, and a ChatGPT result panel for relocation, job offer, and salary planning workflows.
Prompts: 1
Finance
AgentCollect
By Respaid Inc (dba AgentCollect)
AgentCollect connects your AR recovery data to your assistant. Ask "how much did we recover last quarter?", "what's my recovery rate?", or "which accounts paid the most?" and get a complete, business-framed answer scoped strictly to your own account. Read-only, OAuth-secured, no write access.
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Productivity
PayHero
By FlexiTime
The PayHero connector lets your AI assistant answer questions about your PayHero payroll data in a conversation. You can ask about employees and their roles, leave balances and requests, pay totals, and hours worked. For example, "how much annual leave does Sarah have left?" or "what were total wages last month?" and get an answer from your live PayHero data. It's read-only, the assistant can look information up, but can't create, change, or delete anything in PayHero.
Tools: 7
Financial-Services
Ontra
By Ontra
The Ontra MCP Server lets you query your Ontra data directly from Claude and other AI tools — no need to switch between applications. Ask questions about legal entities, ownership structures, funds, people, agreements, tax classifications, jurisdictions, and more. Results respect your existing Ontra permissions, so users only see data they already have access to. Setup takes about a minute via a quick OAuth flow with your Ontra credentials.
Tools: 5
Productivity
isolved People Cloud
By isolved
The isolved People Cloud connector gives employees self-service access to their own HR data inside Claude. Check time off balances, submit requests, view pay history with full earnings and deduction detail, see withholding in plain language and review direct deposit splits with account numbers always masked. For payroll teams, The Guardian analyzes every payroll run in real time, flags potential errors before the run closes and prepares fixes for administrator approval. Nothing commits without sign-off. Authenticates via OAuth and only accesses data your role is authorized to see. Capabilities vary based on your organization's isolved configuration and enabled services.
Tools: 4
Financial-Services
Embat
By Embat
Query your cash, debt, treasury forecasts, accounting, PSP reconciliations, payments, and intercompany positions in plain language — answered with your real numbers from Embat. TellMe is read-only and inherits your existing permissions, so every reply is scoped to what you can already see. Make your treasury management system a native part of your AI workflow, without leaving the conversation.
Tools: 1
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