Gini Loh System Tools

Decision tools for your own money

Run the numbers before you commit.

Job offers, equity, leases, relocations, expat tax, laptop repairs — even the espresso machine. Every model runs in your browser: no signup, nothing uploaded.

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SIMULATOR // TCO_WATERFALL
LIVE MODEL
Monthly Value Gain: +$2,400/mo
Upfront Transition Outlay: $12,000

Payback Horizon

5.0 Months

3-Year Net Advantage

+$74.4k

Payback Progression Waterfall Profitable at Month 5
M0 (Outlay)
-$12.0k
Month 3
-$4.8k
Breakeven
$0 OFFSET
Month 5
Year 1
+$16.8k
Year 3
+$74.4k
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Job offers, rent, leases and equity, priced in one place

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Portfolio Capital

RSU Hold vs. Sell

Sell on vest, or hold?

Your shares are already taxed as income the day they vest. This tells you whether keeping them beats selling and putting the money somewhere less tied to your employer.

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Career

W-2 vs. 1099 vs. S-Corp

Which structure pays more?

The same work, paid three ways. See what each structure leaves you after tax, health cover, retirement limits and the unpaid admin hours it adds.

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Portfolio Capital

Secondary Tender vs. IPO

Cash now, or wait?

An offer for your private shares is cash today at a discount; waiting is a bet on an exit that may never happen. Compare both after tax, in today’s dollars.

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Stack Economics

Build vs. Buy

Build it, or pay for it?

A build case usually counts the licence it avoids and forgets the engineer-years it spends. This prices both sides over the same horizon, maintenance included.

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Compute Capital

Local GPU vs. Cloud

Own the hardware, or rent?

A workstation is a purchase; cloud GPUs are a bill. This works out the cost per GPU-hour each way, at the hours you will run and the years you will keep it.

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Personal Capital

Rent vs. Buy

Buy the home, or rent and invest?

Renting is not money thrown away if the down payment gets invested. This runs both households to the same year and compares what each one is actually worth.

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Real Estate

Lease Break Cost

What leaving early costs

What walking out early costs: the termination clause, the rent still owed, the reletting fee and what your deposit can legally cover.

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Career

Job-Hop vs. Staying

Move jobs, or stay?

Staying earns about 3% a year; changing employer earns 10-20% in one move. This projects both over ten years, including the equity you forfeit by leaving.

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Compensation

Total Compensation

Which offer pays more?

Base salary is the smallest part of most tech offers. This adds bonus, equity and vesting so two offers can be compared on cash you can actually spend.

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Personal Finance

Where Your Paycheck Goes

Where each paycheck lands

Map every dollar from the paycheck to the account it reaches, then see what a different order is worth over ten years.

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Career

Relocation Payback

Months to pay back the move

Moving for a job costs money before it pays any. This finds how many months of the after-tax raise it takes to recover the move.

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Lifestyle

Espresso Cost per Cup

Cost per cup, at your habit

A $3,000 machine is cheap at four shots a day and expensive at four a month. Enter the habit you actually have and see the cost per cup.

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Hardware

Repair vs. Replace

Fix it, or replace it?

A repair that buys two more years is cheap; one that buys six months is not. Compare the quote against the replacement price, per year of use.

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Software & Ops

Spreadsheet vs. Real Software

Hours lost, or subscription

Rebuilding the same automation every month is a cost even when nobody invoices it. Price the hours against the subscription that replaces them.

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Career

AI Career Radar

What AI can do in your job

See which parts of your job a current model can already do, task by task, and what changing one part of your week would do to the risk.

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Global Mobility

Expat Tax

What you keep after both taxes

A move abroad is sold on the headline tax rate. This compares what you keep after both countries have taxed you, measured over five years.

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CALCULATORS

Calculator Hub

> Lease break, salary velocity, and total compensation calculators you can run without hunting through the archive.

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Filtered Articles

Artificial Intelligence & Future of Work

6 articles

Chronological Archive

Latest Articles

24 Recent Articles
Descending Date • All Articles
Cinematic 35mm photograph of a thoughtful professional in their early 30s standing on a rain-slicked city street at dusk, holding a suitcase in one hand and a smartphone showing a job offer in the oth
Mental Models & Strategy • • 7 min read

Expats: Evaluating the True Value of a Job-Driven Move overseas

For mid-career professionals, moving abroad is no longer a simple salary comparison. Expats must weigh a U.S. $200K tech salary against a €130K European offer, then factor in lower healthcare, education, and daily costs alongside dual-country taxation expats face, visa rules, and hidden relocation expenses. This guide cuts through the noise with a practical framework for expats Costa Rica, expats Germany, and other markets, helping you answer the critical question: is relocating for a job worth it? You will learn how to calculate true net cash flow, anticipate cross-border tax liabilities, and score cities on livability, career momentum, partner employment, schools, and community. The Expat Financial & International Tax Evaluator turns guesswork into a clear, personalized decision. Before you accept the offer, run the numbers, test the lifestyle trade-offs, and protect your long-term wealth. Your next move deserves evidence, not hope.

close-up-view-rich-aromatic-espresso-shot-being-brewed-coffee-machine
Major Purchases & Assets • • 17 min read

Is a $3,000 Espresso Maker Machine Worth It?

For many coffee enthusiasts, the decision to invest in a premium espresso maker machine is clouded by emotion and brand loyalty. A data-driven approach, however, reveals a surprising bottom line. Using the Giniloh Strategic Decision-Intelligence Engine, a detailed cost-per-use analysis of a $3,000 dual-boiler home espresso machine versus daily $6.00 café lattes yields a clear verdict: buy the machine—but only just. Over three years of five weekly drinks, the home setup costs $5.92 per use, saving a mere $60 compared to the café’s $4,680 total. Hidden expenses like beans, milk, descaling, and maintenance push the total cost of ownership to $4,620, making this a borderline decision. The real value emerges when weekly usage increases, tipping the scales toward significant long-term savings. Before you swipe your card, run your own numbers: the difference between a rational investment and a costly impulse is just one calculation away.

Looking for the enterprise tools?

Compute, AI stack and supply-chain analysis is now on AIChieve

The GPU TCO Analyzer, the build-vs-buy asset and software calculator, and the paid PRO apps moved to aichieve.net when the two sites split. This site stays focused on decisions you make with your own money.

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