The Smart Calculator Mega Bundle
All four playbooks. One price.
The complete Singapore financial-decision library — CPF, HDB, Tax, and Retirement playbooks bundled together at one price.
Be the first to know when it launches
All four Smart Calculator playbooks in one bundle: CPF for Real Life, HDB Decision Workbook, Tax Optimization Playbook, and Retirement Planning Bundle. Together: 35+ chapters, 4 bundled workbooks, 270+ pages of Singapore-specific decision frameworks — all four for S$5.
- check_circleCPF for Real Life — 8 chapters + workbook covering housing, top-ups, the 55 reshuffle, CPF LIFE plan choice, and SRS
- check_circleHDB Decision Workbook — 8 chapters + workbook covering BTO/resale/EC, HFE, grants, loan choice, downpayment math, and stamp duties
- check_circleTax Optimization Playbook — 8 chapters + checklist Excel covering every legal Singapore tax relief, ranked
- check_circleRetirement Planning Bundle — 9 chapters + projection spreadsheet covering the 10-year transition from accumulation to drawdown
- check_circleAll four bundled workbooks (Google Sheets / Excel)
- check_circleAnnual update memos for all four books for as long as you own them
- check_circleInstant download of all four books + workbooks, yours to keep forever
Founding-reader price
S$5
First 100 readers — bundle at S$5 (regular S$5).
Education only — not financial advice. Verify every figure against the official source before you commit a dollar.
What the bundle covers
Singapore-specific frameworks across all four major financial decisions:
- savingsCPF mastery from first job to age 90 — contribution, allocation, top-ups, the 55 reshuffle, CPF LIFE.
- homeRun a complete HDB purchase from rent-vs-buy through MOP with every grant + loan decision on paper.
- receipt_longOptimise every legitimate Singapore tax relief — ranked by S$ saved per hour of effort.
- elderlyPlan the 10-year transition from working life to retirement drawdown.
- inventory_2Four bundled workbooks that run your real numbers across all four domains.
- calendar_monthAnnual update memos when CPF / IRAS / HDB / MAS shift rates.
- attach_moneyS$5 for all four playbooks — the same price as a single book.
What's in the bundle
Four playbooks. One Smart Calculator library.
CPF for Real Life in Singapore
The 2026 Playbook
8 chapters · 95 pages · S$5 solo
homeThe HDB Decision Workbook
From "should I buy?" to keys, decoded
8 chapters · 80 pages · S$5 solo
receipt_longThe Singapore Tax Optimization Playbook
Every legal lever, ranked
8 chapters · 75 pages · S$5 solo
elderlyThe Retirement Planning Bundle
The 10-year transition from accumulation to drawdown
9 chapters · 120 pages · S$5 solo
Frequently asked
Honest answers before you buy.
I only need one or two of these — should I still buy the bundle?expand_more
Every individual book is S$5. The bundle is also S$5 — so you get all four playbooks for the price of one. Unless you genuinely only need one, the bundle is the obvious pick.
Are the bundled books the same as the individual versions?expand_more
Yes — identical content. The bundle is purely a pricing convenience. Each book's workbook is also included unchanged.
Do the annual update memos apply to all four?expand_more
Yes. You get the January CPF / IRAS / MOF update memo, the quarterly HDB grant updates, and the February pre-tax-season memo for as long as you own the bundle.
Can I gift the bundle?expand_more
After launch, yes — Gumroad supports gift purchases. For now, message us if you want to gift to a family member during the waitlist period.
Can I get a refund?expand_more
Because the bundle is an instant digital download you keep forever, all sales are final — we can't offer refunds once the files are in your hands. If you're unsure, email us before you buy and we'll help you decide which books fit your situation.