How to Track Your ISA, SIPP and GIA in One Portfolio View

Most UK self-directed investors hold money across at least three tax wrappers by the time they hit their thirties. A Stocks and Shares ISA opened during a pay rise. A SIPP rolled over from a previous employer. A General Investment Account for the bits that did not fit the annual allowances. Possibly a LISA from before age forty, and maybe a JISA running for a child. Each platform shows its own slice. None shows the whole picture.

That fragmented view is not just an aesthetic problem. It hides concentration risk, wrapper allocation mistakes, and tax inefficiency that only become visible in aggregate. This article explains why UK investors end up holding across three or more wrappers, what the 2026 allowances actually look like, and how to combine the lot into a single portfolio view without consolidating accounts onto one broker.

This is not financial advice. Past performance does not guarantee future returns. Consider speaking to an FCA-authorised financial adviser for personalised guidance.

TL;DR

• A typical UK retail investor reasonably holds an ISA, a SIPP and a GIA in parallel — and often a LISA or JISA too. The wrappers are designed for different purposes and different time horizons.
• Aggregating visibility across these accounts does not require consolidating accounts. You keep your providers; you just bring the data into one view.
• The 2026/27 ISA allowance is £20,000. The SIPP annual allowance is £60,000 (or 100% of relevant UK earnings, whichever is lower).
• Holding the same ETF across an ISA and a SIPP is common and often sensible — but if you cannot see both at once, you cannot see the concentration.
• Tooling options range from a hand-built spreadsheet through Sharesight, Snowball Analytics, and newer UK-native trackers like Invormed.

Why UK investors end up holding across 3+ wrappers

UK tax wrappers are not interchangeable. Each has a different purpose, allowance, access rule and tax treatment. Most self-directed investors do not "choose" between them; they accumulate the ones they need.

The Stocks and Shares ISA is the workhorse. £20,000 a year of new contributions, gains and dividends sheltered from UK tax, and full access to the money at any age. For most investors it is the first wrapper to fill.

The SIPP (Self-Invested Personal Pension) is for retirement. Contributions get income tax relief at your marginal rate, growth is sheltered, but the money is locked until age 57 (rising to 58 from 2028). The annual allowance is £60,000 — though that includes employer contributions to any workplace pension you also hold.

The GIA (General Investment Account) is the unsheltered overflow. Once you have used your ISA allowance, anything else gets held in a GIA, where capital gains tax and dividend tax both apply. The 2026/27 CGT annual exemption is £3,000 — significantly lower than the £12,300 it sat at five years ago.

The Lifetime ISA (LISA) is a niche product for under-40s. £4,000 a year (which counts towards the £20,000 ISA limit), a 25% government bonus, and a 25% withdrawal penalty if used outside a first home or retirement. Most investors who opened one before age 40 keep it running for the bonus.

The Junior ISA (JISA) is opened by a parent or guardian for a child. £9,000 a year of contributions, tax-free growth, and the money becomes the child's at age 18. Many UK families now run a JISA alongside the parents' own ISAs.

Hold a few of these in parallel for five years and your money lives across four or five providers. That is not a sign of disorganisation — it is a sign of using the wrappers as designed.

2026 wrapper allowances and limits

A few things worth noting if you are planning your year:

• The £20,000 ISA allowance is across all your ISA types combined. Putting £4,000 in a LISA leaves £16,000 across your Stocks and Shares ISA, Cash ISA and Innovative Finance ISA.
• The SIPP annual allowance is reduced for very high earners (the tapered annual allowance for those with adjusted income above £260,000) and for anyone who has already started flexibly drawing pension benefits (the Money Purchase Annual Allowance is £10,000).
• Carry-forward rules let you use unused SIPP allowance from the previous three tax years if you have the earnings to support it.
• The GIA dividend allowance is £500 for 2026/27 — anything above that is taxed at your dividend tax rate (8.75% / 33.75% / 39.35%).

These rules change often. Always check the current figures on gov.uk or with an FCA-authorised adviser before making contribution decisions.

Tax implications across wrappers

The wrappers exist precisely because the tax treatment differs. A consolidated view that ignores wrapper type is not really consolidated — it is just a list.

Inside the ISA and SIPP, gains and dividends are not taxable. You can rebalance freely, take profits, switch funds, all without triggering anything HMRC needs to know about.

Inside the GIA, every disposal counts. If you sell a fund and your total realised gains for the year exceed the £3,000 CGT annual exemption, you pay 18% (basic rate) or 24% (higher rate) on the excess from April 2026 onwards. Dividends above the £500 allowance are taxed at 8.75% / 33.75% / 39.35% depending on your income tax band.

Inside the SIPP, withdrawals are partly taxable in retirement — typically 25% tax-free and the rest taxed as income. So the "no tax on growth" benefit is really "deferred tax with a 25% kicker".

This matters for portfolio decisions a consolidated view should support:

• Asset location. High-yield assets (REITs, dividend funds, corporate bond funds) are usually more tax-efficient inside the ISA or SIPP than in the GIA, where the dividend tax bites. Growth assets where you hope for capital appreciation are also more efficient inside a tax wrapper, but the trade-off is more nuanced if the GIA is funded with already-taxed money.
• Rebalancing order. If you need to sell down an over-weighted position and you hold it across both an ISA and a GIA, selling inside the ISA first avoids the CGT event entirely.
• Realising gains. If you have a GIA position with embedded gains, "Bed and ISA" (selling in the GIA, repurchasing inside the ISA) uses your annual ISA allowance to convert taxable gains into tax-sheltered ones — but you crystallise the gain in the process.

You cannot make these decisions without seeing all your wrappers at once.

How to consolidate visibility without consolidating accounts

There is a subtle but important distinction between consolidating visibility and consolidating accounts.

Consolidating accounts means moving everything onto one broker. Most UK investors do not actually want to do this. Hargreaves Lansdown's research tools, Vanguard's low-cost funds, AJ Bell's pricing on smaller portfolios, and Trading 212's commission-free dealing are all reasons to spread accounts rather than centralise. Switching also creates friction — pension transfers in particular can take weeks and occasionally trigger out-of-market periods.

Consolidating visibility means leaving accounts where they are and pulling the data into a single view. This is the right answer for almost everyone. The mechanics are straightforward:

1. Export holdings from each platform as CSV (or use a tracker that integrates via API where available).
2. Tag each export with its wrapper type — hl-sipp, t212-isa, ii-gia — so the consolidated view can apply wrapper-specific logic.
3. Use ISIN as the common key for normalising holdings across providers. Fund names vary; ISINs do not.
4. Refresh on a cadence that matches your decision-making — monthly is enough for most, quarterly works for buy-and-hold investors.

The output is a single picture: total value by wrapper, asset allocation by wrapper, true exposure once ETFs are looked through, and the difference between sheltered and exposed gains. None of which any individual broker can show you, because none of them sees the others.

Concentration risk across wrappers

The clearest reason to want a consolidated view is concentration. Two examples drawn from common UK portfolios.

Example 1: the same ETF held twice. An investor holds Vanguard FTSE All-World (VWRP) inside their ISA and inside their SIPP — a perfectly reasonable choice, since it is a sensible global core for both wrappers. But they also hold a global tech ETF in the GIA and Fundsmith Equity in the SIPP. Looked at separately, each account is "diversified". Looked at together, 60% of the portfolio is in US large-cap equities — because VWRP is 60% US, Fundsmith is 70% US, and the tech ETF is essentially all US. The wrapper structure is fine; the underlying allocation is not.

Example 2: hidden currency exposure. An investor holds a UK gilt fund in the SIPP, a global equity tracker in the ISA, and an emerging markets ETF in the GIA. They believe they have a balanced multi-currency portfolio. But the SIPP holdings are GBP-denominated, the global tracker is 75% USD-exposed at the underlying-asset level, and the EM ETF mixes a dozen currencies. The aggregate currency risk is materially different from what the labels suggest.

Holding the same ETF across an ISA and a SIPP is not a problem — it is often the right call, since both are sheltered from UK tax. The problem is only ever invisible concentration.

Tools comparison: tracking your wrappers in one place

Several tools handle multi-wrapper aggregation. Each has trade-offs.

A few notes on each:

• Spreadsheet. Works if you are disciplined and your portfolio is small. The maintenance burden compounds quickly across more than two platforms.
• Sharesight. The most mature dedicated tracker, with broad broker integration and excellent tax reports. Treats account types as labels rather than as first-class wrappers — fine for many users, less useful if you want the tool to reason about ISA vs GIA differences.
• Snowball Analytics. Strong on dividends and European investors. Less UK-specific than Sharesight or Invormed.
• Morningstar X-Ray. Free and useful for one-off allocation checks. Not designed as an ongoing consolidated tracker.
• Invormed. UK-native with first-class ISA, SIPP, GIA, LISA and JISA support. Built around UK self-directed investors holding ETFs across multiple tax wrappers. Currently in early access.

For a fuller comparison see the best portfolio trackers for UK investors guide and the Sharesight alternatives article.

A worked example: what the aggregated view actually shows

Take an investor with £64,000 spread across:

• £18,000 Trading 212 Stocks and Shares ISA — a global tracker plus a few US single stocks.
• £28,000 Hargreaves Lansdown SIPP — Fundsmith Equity and a global tracker.
• £12,000 Vanguard ISA — LifeStrategy 80%.
• £6,000 Interactive Investor GIA — UK equities and a tech sector ETF.

Each account looks fine on its own. Aggregated, the picture changes:

• US equity exposure: 68% — every fund and ETF leans heavily into US large-caps once looked through.
• GIA share of total: 9% — the wrapper structure is sensible; only a small slice is exposed to UK tax.
• Highest-volatility holdings sit in the GIA — the tech ETF and UK single names will be the first to trigger CGT events on a market move.
• Same VWRP ETF held twice — once inside the T212 ISA and once inside the HL SIPP. Combined, that single ETF is 22% of net worth.

None of this is visible without aggregation. With aggregation, three actions follow naturally: trim the duplicate ETF or accept it as deliberate, consider whether the high-volatility positions belong in the GIA at all, and check whether the asset location matches the tax characteristics of each wrapper.

FAQ

Can I track my ISA and SIPP in the same app?

Yes — but most general portfolio apps treat the account types as cosmetic labels. A wrapper-aware tracker (Invormed, or to a lesser extent Sharesight with manual configuration) will apply different tax logic to ISA, SIPP and GIA holdings, which is what you actually need. The mechanics are the same in both cases: export from each provider, tag the file by wrapper type, and import.

How does HMRC see ISA vs SIPP holdings?

HMRC sees them as wholly separate. Gains and dividends inside an ISA are not reportable — they do not appear on your Self Assessment. Pension contributions and withdrawals are reported via your provider and your tax return. A GIA produces taxable income and gains reported by you each year. Aggregating the holdings for your visibility does not change anything HMRC sees.

What's the 2026 ISA allowance?

£20,000 across all your ISAs combined for the 2026/27 tax year. That includes Stocks and Shares ISAs, Cash ISAs, Innovative Finance ISAs and Lifetime ISAs (the LISA's £4,000 limit counts within the £20,000 overall). The Junior ISA limit is separate — £9,000 per child.

Can I hold the same ETF in ISA and SIPP?

Yes, and many investors deliberately do. There is no rule against it and no tax disadvantage — both wrappers shelter gains from UK tax. The only thing to watch is that you are not unintentionally over-concentrated. A single ETF held across both wrappers can quietly become a much larger portion of your net worth than you realised.

Do I lose tax benefits if I aggregate?

No. Aggregation is a viewing layer — it does not move money or change the legal status of any account. Your ISA stays an ISA. Your SIPP stays a SIPP. The aggregated view simply lets you make sensible decisions across them. Nothing about how HMRC treats your money changes.

How does aggregation handle my workplace pension?

Most workplace pension providers (Aviva, Scottish Widows, Legal & General, Royal London, Nest) do not offer a clean CSV export. The practical options are: log in periodically and update the value manually inside your tracker, treat the workplace pension as a single line item rather than position-level, or wait until you can transfer it into a SIPP at a later point. Workplace pensions also carry annual allowance implications that interact with any SIPP contributions you make, so check the combined limit annually.

Want this kind of analysis on your real portfolio? Invormed is in early access — join the early-access waitlist.