Donegans Three-Decision Investing Framework

Last updated: 18 August 2026

Given any investing situation anywhere in the world, the user will make exactly three clear decisions — Fund, Account, Platform — and know how to act on existing money and new money without confusion or fiddling.

// TL;DR

The Donegans Three-Decision Investing Framework simplifies investing anywhere in the world down to three choices: the Fund (your growth engine), the Account (the tax container), and the Platform (the company that holds it all). Use it when you're starting to invest, auditing what you already own, moving money to a better setup, or deciding where your next monthly contribution goes. It cuts through jargon like SIPPs, ISAs, 401ks, Kiwi Savers, and ETFs by treating every investment as three nested boxes. It also separates your task into two jobs: fixing existing money and directing new money.

Framework

// When should you use the Donegans Three-Decision Investing Framework?

Use this skill whenever someone needs to start investing, audit what they already own, move money to a better setup, or choose where their next monthly contribution goes. Also use it when someone is overwhelmed by pension jargon (SIPPs, ISAs, 401ks, Kiwi Savers, superannuation, ETFs) and needs a single framework to cut through it.

// What information do you need before applying this framework?

Country of residencerequired
Determines which account types and platforms are available (e.g. UK, US, New Zealand, Australia, Canada).
Existing investments
List of anything the user already owns: employer pension, personal pension, ISA, 401k, brokerage account, etc. Include provider name, fund name if known, and any fees visible.
Investing phaserequired
Which of the three phases applies: Build It (still accumulating), Bridge It (3-5 years either side of stopping work), or Live From It (drawing down).
Monthly gap / new money amount
How much the user can invest each month from their surplus (their 'gap').
Target access age
The age at which the user wants to access their money — determines which account types are appropriate.
ESG / ethical preferences
Whether the user has values-based exclusions they want to apply.

// What core principles guide the Three-Decision Framework?

Three Decisions Only

No matter where in the world you live, you only ever have to make three decisions: choose the Fund, choose the Account, choose the Platform. Everything else is jargon layered on top of this structure.

Platform → Account → Fund (nested boxes)

Every investment has three nested layers: the Platform (the company that holds everything), inside it the Account (the legal/tax container with access rules), inside it the Fund (the growth engine — what your money actually owns). Never confuse the layers.

The Growth Engine

The Fund is the growth engine for your money. The Platform administers it; the Account creates the rules; but the Fund does the growing. You need a growth engine in all three phases — Build It, Bridge It, and Live From It. It never disappears; you only add a spending buffer alongside it in later phases.

Two Jobs: Existing Money and New Money

Always separate the task into two jobs. Job 1 — Existing Money: understand it, question it, improve it if needed. Job 2 — New Money: choose where the next monthly contribution goes. Both use the same three-decision framework.

Income Promise vs Investment Pot

There are two types of retirement money. A Defined Benefit (DB) pension is an income promise — someone guarantees you a payment in retirement and you are not responsible for the investments. A Defined Contribution (DC) pension is an investment pot — you and your employer contribute, you are responsible for what it is invested in and how much ends up there. Your job is different for each.

How Global Is Your Global Fund?

Not all 'global' funds are equally global. Funds can cover: S&P 500 (500 US companies only), Developed World (large + medium companies from 25 developed countries), All World (adds 23 emerging markets), or Global All-Cap (adds small companies — ~7,500–10,000 companies total). Always check what proportion of the world your fund actually covers.

Free Money First

Always take the free money before anything else. Employer pension matching and government tax relief are free money. Never turn down the match. Always take the match.

Good Enough Stamp

There is no perfect fund. Stop searching for a marginally cheaper or slightly broader alternative. If the fund is broad, global, passive, low-cost, and understandable, stamp it 'Good Enough' and stop fiddling. Fiddling causes damage.

Time in the Market beats Timing the Market

The goal is to keep money invested at all times. Transfers, phase changes, and account switches should be executed as quickly as possible to minimise time out of the market.

Your Voice, Not Your Investing, Changes the World

ESG funds reduce diversification, can increase fees, and have very weak evidence of actually changing company behaviour. If values matter, use your spending, your vote at shareholder meetings, and your public voice — these are far more powerful levers than fund selection.

// How do you apply the Three-Decision Framework step by step?

1
Classify all existing retirement money as Income Promise or Investment Pot
For each pension or account the user holds, determine: Is it a Defined Benefit (DB) / final salary / career average pension (income promise)? Or is it a Defined Contribution (DC) / workplace pension / SIPP / 401k / Kiwi Saver / superannuation (investment pot)? DB pensions require different treatment — investigate the promised income, start age, inflation linkage, survivor benefits, and transfer implications. DC pensions proceed to Step 2.
2
Identify the user's investing phase
Build It: still accumulating, many years from drawing down — hold 100% growth engine. Bridge It: 3–5 years either side of stopping work — add a spending buffer (bonds, money market fund, cash) alongside the growth engine. Live From It: actively drawing down — keep the growth engine running, withdraw from the spending buffer and rebalance. The growth engine (global index fund) is present in ALL three phases.
3
Map all existing investments onto the Platform → Account → Fund diagram
For every investment the user owns, fill in three columns: Platform (provider name), Account (type: pension/ISA/GIA/401k etc.), Fund (name, what it owns, fee %). If any column is unknown, that is the research action. Use a table or nested-box drawing. Flag any Income Promise accounts separately — they do not need fund investigation.
4
Decision 1 — Evaluate or choose the Fund using the Growth Engine Checklist
Apply the five-point checklist to each fund identified: (1) Broad — lots of companies? (2) Global — not concentrated in one country? (3) Passive — tracks an index, no active manager? (4) Low cost — fees as low as possible? (5) Understandable — can the user explain it to someone else? If yes to all five, apply the Good Enough Stamp and stop. Identify how global the fund is: S&P 500 only → Developed World → All World → Global All-Cap. Prefer the most global option available within the platform. For the Build It phase, target 100% accumulation-class global equity index fund. For income units vs accumulation units: use accumulation in all growth phases; use income units only in a General Investment Account (GIA) for tax calculation ease.
5
Decision 2 — Choose the Account type based on tax efficiency, free money, and access age
Prioritise in this order: (1) Capture all employer matching first — never leave free money on the table. (2) Use the most tax-advantaged account available for the country (UK: SIPP/ISA/LISA; US: 401k/403b/IRA/HSA; NZ: Kiwi Saver; AU: Super). (3) Check the access age for pension-type accounts versus the user's target financial freedom age — if they want access before pension age, they need a separate accessible account (e.g. ISA in the UK). (4) Consider whether more than one account type is needed to bridge the gap between financial freedom date and pension access date.
6
Decision 3 — Choose the Platform using three criteria
Criterion 1 — Trustworthy: Is it regulated by the relevant authority in the user's country? Are client assets held separately (segregated/custodied) from the platform's own money? Has it been established for a meaningful period? Criterion 2 — Has the right Account and Fund: Does the platform offer the account type needed AND the global index fund chosen? If it lacks either, discard it. Criterion 3 — Fees low and usable: Compare platform fee structures (fixed fee vs percentage fee — percentage is cheap when small, expensive when large). Check for dealing fees, entry/exit fees. Prefer boring platforms that do not gamify investing or push trading. Do not pay percentage-based advice fees.
7
Decide whether anything needs to change and plan the switch if so
Three change scenarios: (A) Fund problem only — switch fund within the same platform and account. (B) Platform problem only — transfer account and fund to a new platform; account type stays the same. (C) Fund and platform problem — transfer to new platform, switch to new fund. Always initiate the transfer at the NEW platform, not the old one. Request in-specie transfer (investments move intact, stay invested) if both platforms hold the same fund. If not possible, accept cash transfer (fund sells to cash inside the account, moves, user reinvests). Warn: never manually withdraw and reinvest — this breaks tax protection and uses annual allowances. Check before transferring: is there free money, a valuable guarantee, or a tax protection that would be lost?
8
Direct new monthly contributions to the optimal setup
Once the platform, account, and fund are chosen, set up an automated regular contribution into the accumulation-class global index fund. Automate so no manual action is required monthly. If in Build It phase: 100% into the growth engine. If in Bridge It or Live From It: follow the spending buffer allocation decided in Step 2.
9
Apply the ESG filter only if values are non-negotiable
If the user requires ESG: check (1) what is excluded and whether they agree with those exclusions; (2) what is still included (some harmful companies pass ESG screens); (3) how many companies remain — is it still broad or now concentrated? (4) the fee versus a standard global fund; (5) whether the fund manager is voting at shareholder meetings in alignment with the user's values. Remind the user: their spending choices and shareholder voice change companies more effectively than ESG fund selection. But investing in an ESG fund is better than not investing at all.
10
Monitor the transfer and then leave it alone
After initiating a transfer, hound the new provider to confirm progress and completion. Once invested: check no more than monthly. The fund is priced once daily (index fund) or continuously (ETF) — checking more often serves no purpose and encourages fiddling. The job is now done. Go and live your life.

// What do real examples of this framework look like in practice?

User in the UK, Build It phase, has a workplace DC pension with a high-fee active fund (1.2% p.a.) and an old forgotten pension they haven't checked in years.

Step 1: Both are investment pots (DC). Step 3: Map — Platform A (employer's provider), Account: workplace pension, Fund: active global equity, 1.2% fee — fails the passive and low-cost checklist. Old pension: fund unknown — research action. Step 4: Fund fails Growth Engine Checklist (active, high cost). Step 6: Check whether the workplace pension platform offers a passive global index fund — if yes, switch fund within same platform (Change Scenario A). For the old pension, trace it via the government pension tracing service, identify the fund, then transfer to a regulated low-cost platform (e.g. Vanguard UK) in a SIPP (Change Scenario B or C). Step 7: Initiate transfer from the new Vanguard platform using their 'transfer a pension to us' button. Request in-specie if possible. Step 8: Set up monthly direct debit into Vanguard FTSE Global All Cap (accumulation units).

User in the US, Bridge It phase (4 years from target retirement), has a 401k with decent fund options and no other accounts.

Step 2: Bridge It — needs growth engine plus a spending buffer. Step 4: Within the 401k, select the lowest-cost passive global index fund available (e.g. a total world index or S&P 500 index if that is the only option — apply Good Enough Stamp). Step 5: Check whether employer match is being fully captured — if not, increase contribution to the match limit first. Consider opening a separate IRA for additional tax-advantaged space. Step 4 (phase-specific): Begin allocating a portion (to be determined in Week 10 sequence-of-returns framework) to a bond or money market fund as the spending buffer, keeping the majority in the growth engine. Step 6: Evaluate whether Charles Schwab, Vanguard, or Fidelity offers lower platform fees than the current 401k provider for the IRA portion.

User overwhelmed by question 'Should I invest in my pension or buy an index fund?'

Apply the nested-box model. The answer is both — and this is not a contradiction. The pension is the Account (tax container). The index fund is the Fund (growth engine) held inside the Account. The platform is the provider that holds both. The user needs all three layers. They choose a global index fund (Fund), hold it inside a pension or ISA (Account), on a regulated low-cost platform (Platform). The question dissolves once the three-layer structure is understood.

// What mistakes should you avoid when investing with this framework?

Confusing the three layers — asking 'should I get a pension OR an index fund?' when the answer is always both (fund lives inside the account).
Turning down employer pension matching — this is free money; never leave the match on the table.
Treating more funds as more diversification — buying five global index funds just buys the same top companies repeatedly, creates a mess, and does not autorebalance.
Home country bias — investing only in the country you live in because it feels familiar; familiar does not equal global.
Fiddling — switching funds chasing last year's best performer or a marginally cheaper fee; time in the market beats timing the market.
Anchoring — refusing to transfer a poorly performing fund until it 'goes back up to what I paid'; this keeps you in a bad fund longer and delays compounding in a better one.
Manually withdrawing money instead of using the official transfer process — withdrawing from an ISA uses your annual allowance and breaks tax protection.
Checking investments multiple times a day — index funds price once daily; ETFs price continuously but checking frequently encourages harmful trading behaviour.
Assuming ESG funds change the world — the evidence is weak; spending choices and shareholder voice are far more effective levers.
Assuming more platforms means more safety — the key protection is asset segregation (your investments held separately from the platform's own money), not the number of platforms you use.
Waiting for markets to recover before making a platform or fund switch — time out of the market is the real cost; switch and get reinvested as fast as possible.
Paying percentage-based financial advice fees embedded in a platform — these compound against you as your freedom fund grows.
Ignoring the access-age trap — locking all money in a pension when you want financial freedom earlier than the pension access age; always hold a separately accessible account (e.g. ISA in UK) for the gap years.

// What key terms do you need to know for this framework?

Three Decisions: The only three choices every investor must make, regardless of country: (1) choose the Fund, (2) choose the Account, (3) choose the Platform.
Platform: The company that holds and administers your account and fund. It provides statements, processes contributions, and executes transfers. Examples: Vanguard, Fidelity, Trading 212, Charles Schwab.
Account: The legal and tax container that wraps around your fund. It determines when you can access the money, how it is taxed, and whether you receive free money (employer match, government top-up). Examples: SIPP, ISA, 401k, Kiwi Saver.
Fund: What your money actually owns — the growth engine. Specifically a global passive index fund in the Donegans' methodology.
Growth Engine: The core fund — a broad, global, passive, low-cost index fund — that grows your Freedom Fund. It is present and essential in all three investing phases: Build It, Bridge It, and Live From It.
Freedom Fund: The total pot of invested money that will eventually replace the user's need to work — the purpose of everything being invested.
Build It Phase: The accumulation stage when the user is still earning and contributing. Target allocation: 100% growth engine (global index fund, accumulation units).
Bridge It Phase: The 3–5 years either side of stopping work, when the user adds a spending buffer (bonds, money market fund, cash) alongside the growth engine to protect against short-term volatility.
Live From It Phase: The drawdown stage. The growth engine continues running; the user withdraws from the spending buffer and periodically rebalances. Lasts until expiration.
Spending Buffer: Assets (bonds, money market funds, cash) added in the Bridge It and Live From It phases to ensure money is always available for living expenses even if the growth engine is temporarily down.
Income Promise: A Defined Benefit (DB) / final salary / career average pension where an employer or organisation promises a specific income in retirement. The user is not responsible for the investments.
Investment Pot: A Defined Contribution (DC) pension, SIPP, 401k, Kiwi Saver, or superannuation where the user is responsible for what the pot is invested in and how large it grows.
Global All-Cap: The most global fund type — covers developed markets AND emerging markets AND large, medium, AND small companies. In the UK: Vanguard FTSE Global All Cap. In the US: VT (Vanguard Total World Stock Index Fund). Approximately 7,500–10,000 companies.
Developed World Fund: A fund covering large and medium companies from ~25 developed countries (USA, Canada, Australia, Japan, Western Europe etc.). Approximately 2,000 companies. Does not include emerging markets or small companies.
All World Fund: A fund covering large and medium companies from both developed and emerging markets (~48 countries total, ~3,500 companies). Does not include small companies.
Home Country Bias: The tendency to over-invest in the country you live in because it feels familiar. The Donegans warn against this — familiar does not equal global, and no one knows which country will perform best in future.
Good Enough Stamp: The Donegans' concept for stopping the search for a perfect fund. If a fund is broad, global, passive, low-cost, and understandable, it earns the Good Enough Stamp. Stop fiddling.
Accumulation Units: Fund share class where dividends are automatically reinvested to buy more shares rather than paid out as cash. Preferred during the Build It phase.
Income Units: Fund share class where dividends are paid out as cash. Useful in the Live From It phase and mandatory for General Investment Accounts (GIA) to simplify tax calculation.
In-Specie Transfer: A platform transfer method where investments move intact and remain invested throughout — the fund is not sold. Preferred because it keeps money in the market.
Cash Transfer: A platform transfer method where the fund is sold to cash inside the account, the cash moves to the new platform, and the user reinvests. Used when the new platform cannot hold the existing fund. Involves temporary time out of market.
Free Money: Employer pension matching contributions and government tax relief/top-ups. The Donegans' first rule: always take the match. Never turn down free money.
ESG Fund: Environmental, Social, and Governance fund — excludes or underweights companies based on ESG scores. The Donegans warn that ESG funds reduce diversification, may increase fees, and have weak evidence of actually changing company behaviour.
Anchoring: The psychological trap of refusing to sell or transfer a poorly performing investment until it returns to a previous (higher) price. Causes financial damage by keeping money in a bad fund longer than necessary.
Gap: The surplus left after all spending — the money available each month for new contributions to the Freedom Fund.
General Investment Account (GIA): A taxable brokerage/investment account with no special tax wrapper. Used only after tax-advantaged accounts are maximised. Requires income units for easier dividend tax calculation.

// FREQUENTLY ASKED QUESTIONS

What is the Donegans Three-Decision Investing Framework?

It's a method that reduces all investing decisions to three choices: the Fund (your growth engine — a global passive index fund), the Account (the tax container like an ISA, 401k, or SIPP), and the Platform (the company that holds everything, like Vanguard or Fidelity). Every investment is three nested boxes: Platform holds the Account, which holds the Fund. Once you understand this structure, pension jargon dissolves.

What are the three decisions in investing according to the Donegans?

The three decisions are: choose the Fund, choose the Account, and choose the Platform. The Fund is the growth engine — what your money actually owns. The Account is the legal and tax container with access rules and free money. The Platform is the regulated company that holds and administers everything. No matter where you live, these are the only three decisions you ever make.

How do I start investing using this framework?

First separate your task into two jobs: existing money and new money. For each, work through the three decisions in order. Classify any existing pensions as an Income Promise (Defined Benefit) or Investment Pot (Defined Contribution), map each investment onto the Platform → Account → Fund diagram, then evaluate the fund, account, and platform. Finally, automate a monthly contribution into a global index fund and leave it alone.

How do I choose a good index fund?

Apply the five-point Growth Engine Checklist: is it Broad (lots of companies), Global (not concentrated in one country), Passive (tracks an index), Low cost (minimal fees), and Understandable (can you explain it)? If yes to all five, apply the 'Good Enough Stamp' and stop searching. Prefer the most global option available — Global All-Cap covers roughly 7,500–10,000 companies across developed and emerging markets.

Should I invest in a pension or an index fund?

Both — this isn't a contradiction. The pension is the Account (the tax container), and the index fund is the Fund (the growth engine) held inside that account. The Platform is the company holding both. You need all three layers. You choose a global index fund, hold it inside a pension or ISA, on a regulated low-cost platform. The question dissolves once you understand the three-layer structure.

How does this framework compare to just picking stocks or using a robo-advisor?

Unlike stock-picking, which relies on timing and prediction, this framework uses broad global passive index funds and prioritises 'time in the market beats timing the market.' Unlike robo-advisors that charge percentage fees, it steers you toward low-cost DIY platforms. Its main advantage is clarity: three decisions replace endless product comparisons, and the nested-box model works in any country without needing bespoke advice.

When should I use the Donegans Three-Decision Framework?

Use it whenever you're starting to invest, auditing investments you already own, moving money to a better setup, or deciding where your next monthly contribution goes. It's especially useful when you're overwhelmed by pension jargon — SIPPs, ISAs, 401ks, Kiwi Savers, superannuation, ETFs — and need a single structure to cut through it all and act with confidence.

What results can I expect from using this framework?

You'll end up with a clear, automated setup: a global index fund (your growth engine) held in the most tax-efficient account available, on a trustworthy low-cost platform, with employer matching and government tax relief captured. You'll stop fiddling, reduce fees, avoid home-country bias, and keep money invested continuously. The practical outcome is a simple 'set and forget' Freedom Fund you check no more than monthly.

What's the difference between a Defined Benefit and Defined Contribution pension?

A Defined Benefit (DB) pension is an Income Promise — an employer guarantees you a specific retirement income and you aren't responsible for the investments. A Defined Contribution (DC) pension is an Investment Pot — you and your employer contribute, and you're responsible for how it's invested and how much it grows. DB pensions need investigation of the promised income, start age, and transfer implications; DC pensions run through the three decisions.

How do I move my money to a better platform without losing tax protection?

Always initiate the transfer at the NEW platform, not the old one, and request an in-specie transfer so your investments move intact and stay invested. If the new platform can't hold your existing fund, accept a cash transfer where it sells to cash inside the account and moves. Never manually withdraw and reinvest — that breaks tax protection and uses annual allowances. Check first for free money or guarantees you'd lose.

How global should my global fund actually be?

Not all 'global' funds are equal. An S&P 500 fund is 500 US companies only; a Developed World fund covers ~2,000 large and medium companies from 25 countries; an All World fund adds emerging markets (~3,500 companies); a Global All-Cap adds small companies (~7,500–10,000 companies). Always check what proportion of the world your fund covers, and prefer the most global option available on your platform.

Do ESG funds actually make a difference?

The evidence is weak. ESG funds reduce diversification, can increase fees, and have little proof of changing company behaviour. Some harmful companies still pass ESG screens. If values matter, your spending choices, your vote at shareholder meetings, and your public voice are far more powerful levers than fund selection. That said, investing in an ESG fund is still better than not investing at all.

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