Gold Buy/Sell Tax Settlement Assistant

4.05

Derivation Chain

Step 1 Gold price surge

→

Step 2 Increased gold investment interest among 50s

→

Step 3 Losses from not understanding tax and fee structures in gold trading

Problem

Assets around age 55 are buying gold through various channels—physical gold, the KRX gold market, gold ETFs, etc.—due to the surge in gold prices, but the capital gains tax, VAT, and transaction fee structures differ completely by channel. In fact, the KRX gold market is exempt from capital gains tax, while physical gold bars incur a 10% VAT, and gold ETFs are subject to a 15.4% dividend tax. If you don't understand these differences and choose the wrong buying channel, your after-tax net proceeds can differ by 15-20% for the same return.

Solution

Enter the purchase amount, holding period, and expected selling price on the web, and it automatically shows a comparison table of after-tax net proceeds for four channels: KRX gold market, gold bars, gold ETFs, and gold funds. It breaks down and visualizes each channel's tax items (capital gains tax, VAT, dividend tax, transaction fees) and recommends the optimal buying channel.

Target: People in their 50s-60s with over 30 million KRW (approx. $22,500) in spare funds, interested in gold investment but not fully understanding the tax structure, and focused on asset management.

Revenue Model: Free basic comparison table. Detailed tax simulation PDF report: 3,000 KRW (approx. $2.25) per transaction. Monthly Premium subscription at 9,900 KRW (approx. $7.43) adds gold price fluctuation alerts and optimal sell timing alerts.

Ecosystem Role: Regulation

MVP Estimate: 2_weeks

NUMR-V Scores

N Novelty

3.0/5

U Urgency

4.0/5

M Market

4.0/5

R Realizability

5.0/5

V Validation

4.0/5

NUMR-V Scoring System

N Novelty	1-5	How uncommon the service is in market context.
U Urgency	1-5	How urgently users need this problem solved now.
M Market	1-5	Market size and growth potential from proxy indicators.
R Realizability	1-5	Buildability for a small team with realistic constraints.
V Validation	1-5	Validation signal quality from competition and demand data.

N=.15 U=.20 M=.15 R=.30 V=.20

Feasibility (75%)

Tech Complexity

34.7/40

Data Availability

20.4/25

MVP Timeline

20.0/20

API Bonus

0.0/15

Feasibility Breakdown

Tech Complexity	/ 40	Difficulty of core implementation stack.
Data Availability	/ 25	Practical availability and cost of required data.
MVP Timeline	/ 20	Expected time to ship a usable MVP.
API Bonus	/ 15	Bonus for viable public API leverage.

Market Validation (74/100)

Competition

10.0/20

Market Demand

20.0/20

Timing

16.0/20

Revenue Signals

9.0/15

Pick-Axe Fit

10.5/15

Solo Buildability

8.0/10

Validation Breakdown

Competition	/ 20	Signal quality from competitor landscape.
Market Demand	/ 20	Demand proxies from search and mention patterns.
Timing	/ 20	Fit with current shifts in tech, behavior, and regulation.
Revenue Signals	/ 15	Reference evidence for monetization viability.
Pick-Axe Fit	/ 15	How well the concept serves participants in a trend.
Solo Buildability	/ 10	Practicality for lean-team implementation.

Technical Requirements

Frontend [medium] Backend [low] Data Pipeline [low]

Dashboard