Max Ghenis MaxGhenis

GiveCalc 2.0: Calculate your true cost of giving this Giving Tuesday

TL;DR: We've rebuilt GiveCalc as a standalone web application at givecalc.org. The free calculator now covers US federal and state taxes, UK Gift Aid, and tax years 2024-2026. Use it to find out how much your charitable donations actually cost after tax savings.

What's new since last year

A year ago, I introduced GiveCalc as a Streamlit app on PolicyEngine's infrastructure. This Giving Tuesday, we're launching GiveCalc 2.0—rebuilt from the ground up with a faster React interface, expanded to cover UK Gift Aid, and now available at its own domain: givecalc.org.

The new version supports multiple income types (wages, self-employment, capital gains, dividends, interest), works on mobile, and lets you calculate for tax years 2024, 2025, or 2026.

GiveCalc Social Media Posts - Giving Tuesday 2025

LinkedIn (Global)

This Giving Tuesday, know the true cost of your donation.

We've launched GiveCalc (givecalc.org) — a free calculator that shows how charitable giving affects your taxes.

🇺🇸 US donors: See federal + state tax savings across all 50 states, DC, and NYC. Includes 2025 tax year with HR1 changes.

Simulated Referee Reports: Round 3

Beer Price Controls at Yankee Stadium (SSRN Working Paper)

Status: All reviewers recommend Accept

REFEREE REPORT #1 (Sports Economics)

Recommendation: Accept

Complete Project Management Comparison for PolicyEngine

🔄 Update: CRM Integration Required

New Context: PolicyEngine is also implementing CiviCRM for constituent relationship management. This significantly changes the landscape for non-technical work (grants, papers, partnerships).

Key Insight: CiviCRM has built-in grant tracking, potentially eliminating the need for separate grant management tools!

API Comparison: GitHub Projects vs Linear vs Jira - Deadline Filtering

The Problem: You Can't Easily Query Deadlines in GitHub Projects

GitHub Projects v2 API Limitation

GitHub Projects v2 uses GraphQL, but filtering by custom fields (like due dates) in the API is extremely cumbersome:

# GitHub Projects v2 - Complex and Limited

	#!/usr/bin/env python3
	"""
	PolicyEngine GitHub Organization Statistics
	Calculates repository count, contributor count, and fork count
	for use in grant proposals and documentation.

	Run with: python github_stats.py
	Requires: requests library (pip install requests)
	"""

	# Simulated Referee Reports: Round 2
	## Beer Price Controls at Yankee Stadium (SSRN Working Paper)

	---

	## AUTHOR RESPONSE CHECKLIST

	\| Referee \| Issue \| Status \|
	\|---------\|-------\|--------\|
	\| R1 \| Quantify decomposition in abstract \| ✅ DONE (111% intensive, -11% extensive) \|

	<!DOCTYPE html>
	<html lang="en">
	<head>
	<meta charset="UTF-8">
	<meta name="viewport" content="width=device-width, initial-scale=1.0">
	<title>PolicyEngine Halloween</title>
	<style>
	body {
	margin: 0;
	padding: 0;