US Quarterly Tax Estimator Connector for AI agents.
3 live capabilities
Calculate federal estimated tax payments and Safe Harbor status accurately.
Waiting for input…
Why people use US Quarterly Tax Estimator
US Quarterly Tax Estimator for IRS Safe Harbor Compliance
This Connector cuts that out. You just tell your agent what you expect to make this year and what you paid last year. It handles the logic and gives you the exact amounts for all four quarters. You get a clear plan without the manual headache.
What Vinkius changes
You get a precise tax payment roadmap instead of guessing your quarterly obligations.
Use it from Claude, ChatGPT, Cursor or another AI client you already have.
One account · 5,900+ Connectors
- Real-world use case 01
Planning for a high-income year
A freelancer projects $150k in income and asks their agent to calculate the payments due by April 15.
- Real-world use case 02
Checking current withholding status
A small business owner wants to know if their current payments meet the 110% Safe Harbor rule.
- Real-world use case 03
Projecting tax rate changes
A consultant wants to see how a $10k raise changes their marginal tax rate for the next year.
Complete set · 3capabilities
The complete US Quarterly Tax Estimator capability set.
These are the exact actions your AI can choose when you ask it to work with US Quarterly Tax Estimator.
01—03
3 capabilities in this set.
Part of 3 available through US Quarterly Tax Estimator.
- 01 Capability
Evaluate safe harbor compliance
Check if your current tax payments meet the IRS Safe Harbor requirements to avoid penalties. This helps you stay compliant without doing the manual math.
- 02 Capability
Estimate quarterly payments
Generate a schedule of four required US quarterly tax payments based on your projected income. It gives you clear deadlines and amounts for the entire year.
- 03 Capability
Calculate marginal tax bracket
Determine your specific marginal tax rate based on your total annual income level. This helps you plan for future growth and know your actual tax costs.
Set up in minutes
One URL. Then ask US Quarterly Tax Estimator to work.
Claude and ChatGPT only need the Connector URL. Copy it once, add it in settings, and use US Quarterly Tax Estimator from the conversation.
Choose your client
Live previewAdvanced clients IDE · CLI
Claude · Web + desktop
Connector URL · ready to paste
Streamable HTTPhttps://edge.vinkius.com/vk_preview_qehiiamMpd2GzZXdM8aLWjQwAKKJUu39dVPRg0ZU/mcp - Step 01
Open Connectors
In Claude Web or Claude Desktop, open Settings and choose Connectors.
- Step 02
Add the URL
Choose Add custom connector, name it US Quarterly Tax Estimator, and paste the URL above.
- Step 03
Turn it on in chat
Select +, open Connectors, and enable US Quarterly Tax Estimator for the conversation.
ChatGPT · Web + desktop
Connector URL · ready to paste
Streamable HTTPhttps://edge.vinkius.com/vk_preview_qehiiamMpd2GzZXdM8aLWjQwAKKJUu39dVPRg0ZU/mcp - Step 01
Open MCP settings
On desktop, open Settings and MCP servers. On web, open your workspace app or connector settings.
- Step 02
Add the URL
Choose Add server with Streamable HTTP, or create a custom MCP app, then paste the US Quarterly Tax Estimator URL.
- Step 03
Save and start
Save the connection and enable US Quarterly Tax Estimator in your conversation. Desktop may ask you to restart once.
Cursor · IDE configuration
Advanced setup
{
"mcpServers": {
"us-quarterly-tax-estimator": {
"url": "https://edge.vinkius.com/vk_preview_qehiiamMpd2GzZXdM8aLWjQwAKKJUu39dVPRg0ZU/mcp"
}
}
}- Step 01
Open MCP Settings
Press Cmd+Shift+P (macOS) or Ctrl+Shift+P (Windows/Linux) → search "MCP Settings"
- Step 02
Add the server config
Paste the JSON configuration above into the mcp.json file that opens
- Step 03
Save the file
Cursor will automatically detect the new Connector
- Step 04
Start using US Quarterly Tax Estimator
Open Agent mode in chat and ask: "Using US Quarterly Tax Estimator, help me...". 3 tools available
VS Code Copilot · IDE configuration
Advanced setup
{
"mcpServers": {
"us-quarterly-tax-estimator": {
"url": "https://edge.vinkius.com/vk_preview_qehiiamMpd2GzZXdM8aLWjQwAKKJUu39dVPRg0ZU/mcp"
}
}
}- Step 01
Create MCP config
Create a .vscode/mcp.json file in your project root
- Step 02
Add the server config
Paste the JSON configuration above
- Step 03
Enable Agent mode
Open GitHub Copilot Chat and switch to Agent mode using the dropdown
- Step 04
Start using US Quarterly Tax Estimator
Ask Copilot: "Using US Quarterly Tax Estimator, help me...". 3 tools available
Windsurf · IDE configuration
Advanced setup
{
"mcpServers": {
"us-quarterly-tax-estimator": {
"url": "https://edge.vinkius.com/vk_preview_qehiiamMpd2GzZXdM8aLWjQwAKKJUu39dVPRg0ZU/mcp"
}
}
}- Step 01
Open MCP Settings
Go to Settings → MCP Configuration or press Cmd+Shift+P and search "MCP"
- Step 02
Add the server
Paste the JSON configuration above into mcp_config.json
- Step 03
Save and reload
Windsurf will detect the new server automatically
- Step 04
Start using US Quarterly Tax Estimator
Open Cascade and ask: "Using US Quarterly Tax Estimator, help me...". 3 tools available
Cline · IDE configuration
Advanced setup
{
"mcpServers": {
"us-quarterly-tax-estimator": {
"url": "https://edge.vinkius.com/vk_preview_qehiiamMpd2GzZXdM8aLWjQwAKKJUu39dVPRg0ZU/mcp"
}
}
}- Step 01
Open Cline MCP Settings
Click the Connectors icon in the Cline sidebar panel
- Step 02
Add remote server
Click "Add Connector" and paste the configuration above
- Step 03
Enable the server
Toggle the server switch to ON
- Step 04
Start using US Quarterly Tax Estimator
Ask Cline: "Using US Quarterly Tax Estimator, help me...". 3 tools available
Claude Code · Terminal command
Advanced setup
claude mcp add us-quarterly-tax-estimator --transport http "https://edge.vinkius.com/vk_preview_qehiiamMpd2GzZXdM8aLWjQwAKKJUu39dVPRg0ZU/mcp"- Step 01
Install Claude Code
Run npm install -g @anthropic-ai/claude-code if not already installed
- Step 02
Add the Connector
Run the command above in your terminal
- Step 03
Verify the connection
Run claude mcp to list connected servers, or type /mcp inside a session
- Step 04
Start using US Quarterly Tax Estimator
Ask Claude: "Using US Quarterly Tax Estimator, show me...". 3 tools are ready
Where the request belongs
Work US Quarterly Tax Estimator can move forward.
This is for self-employed people and small business owners who hate doing tax math and want to avoid IRS underpayment penalties.
Freelance Consultant
Uses it to plan quarterly tax set-asides for variable monthly income.
Small Business Owner
Checks Safe Harbor compliance to ensure their current payroll withholdings are sufficient.
Accountant
Quickly generates tax payment schedules for multiple clients during tax season.
Build the capability set
Add more capabilities.
Each Connector adds new actions and data without changing how you work.
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Calculate precise US payroll tax liabilities, including FICA, Medicare, FUTA, and SUTA.
US Self-Employment Tax Calculator
Calculate US Self-Employment tax (Social Security and Medicare) and associated income tax deductions for the 202rag year.
US State Tax Calculator
Calculate US state income tax rates and liabilities based on residency and taxable income.
US Corporate Tax Calculator
Estimate US federal and state corporate income taxes, providing comparative analysis between C-Corp, S-Corp, and LLC structures.
Bring your own AI
Change the model, client or framework. Keep US Quarterly Tax Estimator connected.
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Before you connect
Questions about US Quarterly Tax Estimator.
The practical details behind the request, access and result.
Can the US Quarterly Tax Estimator help me avoid IRS penalties?
Yes. It checks your current payments against the 90% and 110% Safe Harbor rules to tell you if you are at risk of underpayment penalties.
Does it work for 1099 contractors?
Yes, it is specifically designed for self-employed individuals and contractors who need to calculate Form 1040-ES payments.
Can it tell me my tax bracket?
Yes, it can identify your specific marginal tax bracket and the corresponding percentage rate based on your total annual income.
How do I get my payment schedule?
Just tell your agent your projected annual income and last year's tax liability. The Connector will generate a 4-quarter schedule with specific amounts and dates.
Is this for filing my taxes?
No, this capability is for estimating your quarterly payments and planning your tax strategy. It does not file your actual tax return with the IRS.
Can I check my Safe Harbor status?
Yes, you can ask your agent to check if your current payments meet the IRS Safe Harbor requirements to stay compliant.
How can I find my quarterly payment deadlines?
Use the estimate_quarterly_payments capability. It returns a list of all four quarterly deadlines along with the specific amount due for each period.
What is the Safe Harbor rule?
The Safe Harbor rule allows you to avoid underpayment penalties by paying either 90% of your current year's tax or 100% (or 110% for high earners) of your prior year's tax.
Can I check if my current payments are enough to avoid penalties?
Yes. The evaluate_safe_harbor_compliance capability compares your total paid to date against the required Safe Harbor thresholds.
One connection away
Give your agent a direct line to US Quarterly Tax Estimator.
Connect US Quarterly Tax Estimator once. Keep it beside 5,900+ managed Connectors when the next task needs more.
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