TaxQuarterly

Effortless quarterly tax estimates for new freelancers—no penalties, no stress.

Score: 7.8/10United StatesEasy BuildReady to Spawn
Brand Colors

The Opportunity

Problem

New freelancers transitioning from full-time jobs struggle to calculate accurate quarterly tax estimates, leading to underpayments and IRS penalties.

Solution

Users input their income, expenses, and filing status to get instant, accurate quarterly tax estimates based on current IRS rates. The tool generates payment schedules, reminders, and exportable reports for easy filing. It prevents underpayments by factoring in state taxes and self-employment specifics tailored for freelancers.

Target Audience

New freelancers transitioning from full-time employment

Differentiator

Hyper-focused on new freelancers' transition pain with simplified inputs and visual payment calendars, unlike general tax software.

Brand Voice

supportive

Features

Income/Expense Input

must-have8h

Simple form to log monthly income and expenses

Tax Estimate Calculator

must-have12h

Computes federal, state, and SE tax estimates using latest IRS formulas

Payment Schedule

must-have6h

Generates calendar with due dates and amounts

Report Export

must-have4h

PDF/CSV exports for accountants or IRS

Email Reminders

must-have8h

Automated emails before quarterly deadlines

Historical Tracking

nice-to-have6h

View past estimates and actuals

Scenario Simulator

nice-to-have10h

What-if analysis for income changes

Mobile App View

nice-to-have4h

Responsive design optimized for phones

Total Build Time: 58 hours

Database Schema

users

ColumnTypeNullable
iduuidNo
emailtextNo
filing_statustextNo
statetextNo
created_attimestampNo

estimates

ColumnTypeNullable
iduuidNo
user_iduuidNo
quartertextNo
estimated_taxintNo
due_datetimestampNo

Relationships:

  • user_id references users(id)

incomes

ColumnTypeNullable
iduuidNo
user_iduuidNo
monthtextNo
amountintNo

Relationships:

  • user_id references users(id)

API Endpoints

POST
/api/estimates

Calculate new estimate

🔒 Auth Required
GET
/api/estimates

Fetch user estimates

🔒 Auth Required
POST
/api/incomes

Log income data

🔒 Auth Required
POST
/api/reminders

Toggle reminders

🔒 Auth Required
GET
/api/export/:quarter

Generate report

🔒 Auth Required

Tech Stack

Frontend
Next.js 14 + Tailwind CSS + shadcn/ui
Backend
Next.js API routes
Database
Supabase Postgres
Auth
Supabase Auth
Payments
Stripe
Hosting
Vercel
Additional Tools
Resend for emailsZod for validation

Build Timeline

Week 1: Core setup and auth

20h
  • Project setup
  • User auth
  • Basic UI

Week 2: Calculator engine

25h
  • Tax calc logic
  • Input forms
  • DB schema

Week 3: Estimates and schedules

20h
  • API endpoints
  • Payment views
  • Exports

Week 4: Reminders and polish

15h
  • Email integration
  • Testing
  • Landing page
Total Timeline: 4 weeks • 80 hours

Pricing Tiers

Free

$0/mo

No reminders or exports

  • 1 quarter estimate
  • Basic calculator

Pro

$35/mo
  • Unlimited estimates
  • Reminders
  • Exports
  • Historical tracking

Premium

$59/mo
  • All Pro + Scenario simulator
  • Priority support

Revenue Projections

MonthUsersConversionMRRARR
Month 12003%$210$2,520
Month 61,5005%$2,625$31,500

Unit Economics

$40
CAC
$420
LTV
5%
Churn
92%
Margin
LTV:CAC Ratio: 10.5xExcellent!

Landing Page Copy

Stop Guessing Your Freelance Taxes

Get accurate quarterly estimates in minutes—avoid IRS penalties forever.

Feature Highlights

IRS-accurate calculations
Visual payment calendars
Auto-reminders
Easy exports

Social Proof (Placeholders)

"'Saved me from a $1k penalty!' - Sarah, new designer"
"'So simple for beginners.' - Mike, developer"

First Three Customers

Post in r/freelance and Upwork community forums offering free lifetime Pro access for feedback; DM 10 recent posters about tax struggles; leverage personal network of ex-colleagues now freelancing.

Launch Channels

Product Huntr/freelancer/SaaSIndie HackersTwitter #freelance

SEO Keywords

freelancer quarterly tax calculatorestimate self employment taxesnew freelancer tax estimator

Competitive Analysis

Keeper Tax

keepertax.com
$20+/mo
Strength

Auto-categorizes expenses

Weakness

Complex for tax beginners, no quarterly focus

Our Advantage

Simpler estimates tailored to newbies

🏰 Moat Strategy

Data on freelancer tax patterns for improving accuracy over time

⏰ Why Now?

Rise in remote work and gig economy post-2023 layoffs increases new freelancers needing quick tools.

Risks & Mitigation

legalmedium severity

IRS rate changes break calculator

Mitigation

Annual formula updates and disclaimers

marketlow severity

Users prefer accountants

Mitigation

Position as accountant companion

Validation Roadmap

pre-build7 days

Interview 20 freelancers on Reddit

Success: 80% confirm pain and WOY

mvp28 days

Build core calculator, get 50 signups

Success: 20% retention week 2

Pivot Options

  • Expand to full-year projections
  • Add deduction tracker
  • B2B for agencies

Quick Stats

Build Time
80h
Target MRR (6 mo)
$3,000
Market Size
$5000.0M
Features
8
Database Tables
3
API Endpoints
5