SaaS Cost Hub
Deterministic calculators for hidden FX, MoR, and tier fees
SaaS Cost Hub is a free, zero-signup suite of 131 interactive pricing calculators and break-even comparison tools for founders, indie hackers, and finance teams. Instead of reading vague software reviews, plug in your monthly volume, average order value, international sales percentage, or subscriber count to calculate your exact net take-home revenue and real effective fees across Stripe, PayPal, Paddle, Lemon Squeezy, Shopify, Substack, beehiiv, Wise, and 25+ other platforms.
Features
- 131 instant, client-side interactive calculators with zero signup or email wall
- Exact mathematical break-even thresholds showing the exact MRR or subscriber count where switching saves money
- Hidden fee modeling for cross-border cards, FX currency conversion markups, Stripe Tax/Billing add-ons, and refund losses
- Side-by-side platform showdowns across Payment Gateways, Merchants of Record, E-Commerce, Email Marketing, and Cloud Hosting
- Open-source verified fee formulas built from official 2026 published rate schedules
Use Cases
- SaaS founders comparing Merchant of Record fees (Lemon Squeezy vs Paddle) against Stripe + Stripe Tax at different MRR stages
- Newsletter creators calculating the exact paid-subscriber count where beehiiv or Kit beats Substack's 10% revenue cut
- E-commerce merchants auditing when to upgrade from Shopify Basic to Shopify Grow or switch to WooCommerce based on card processing volume
- Global freelancers and agencies comparing real USD/EUR/GBP cross-border payout fees between Wise Business, PayPal, and Stripe
Comments
Hey Fazier community! I built SaaS Cost Hub after getting tired of calculating real payment gateway and SaaS fees in messy spreadsheets every time I launched a project. Headline pricing pages almost never show your real net take-home once you factor in cross-border cards (+1.5%), currency conversion markups (+1% to +4%), tax/billing add-ons, or platform revenue cuts. So I mapped out 131 instant, client-side calculators across Payment Gateways (Stripe, Paddle, Lemon Squeezy, PayPal, Wise), E-Commerce (Shopify tiers, WooCommerce, Etsy), Newsletters (Substack, beehiiv, Kit), and Cloud Hosting — completely free with zero signup walls, plus an open-source formula repo. Would love to hear which SaaS pricing model or hidden fee annoyed you the most, or any platform you want me to add next!
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Comments
Hey Fazier community! I built SaaS Cost Hub after getting tired of calculating real payment gateway and SaaS fees in messy spreadsheets every time I launched a project. Headline pricing pages almost never show your real net take-home once you factor in cross-border cards (+1.5%), currency conversion markups (+1% to +4%), tax/billing add-ons, or platform revenue cuts. So I mapped out 131 instant, client-side calculators across Payment Gateways (Stripe, Paddle, Lemon Squeezy, PayPal, Wise), E-Commerce (Shopify tiers, WooCommerce, Etsy), Newsletters (Substack, beehiiv, Kit), and Cloud Hosting — completely free with zero signup walls, plus an open-source formula repo. Would love to hear which SaaS pricing model or hidden fee annoyed you the most, or any platform you want me to add next!
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