
Buy-to-Let After Section 24: the Arithmetic That Changed
Section 24 stopped individual landlords deducting mortgage interest and replaced it with a 20% tax reduction. On the same flat, that turn...
Brand Finish

Section 24 stopped individual landlords deducting mortgage interest and replaced it with a 20% tax reduction. On the same flat, that turn...

On the same £30,000 car at the same 6.9% APR, the monthly payment ranges 73% across PCP, hire purchase, leasing and cash. The four-year t...

Paying the highest-rate debt first minimises interest. On a £10,000 UK profile at June 2026 Bank of England rates, it saved £687 and thre...

A 15% employee share purchase discount is a 17.6% gain on the cash you pay, and your contributions are only committed for about half the ...

On the Bank of England's own rate series, a £200,000 lifetime tracker paid less interest than a five-year fix in 210 of 270 five-year win...

The usual advice is to compare your mortgage rate with the return you expect from investing. That breaks in three places: an overpayment ...

Cash offset against a mortgage earns the mortgage rate and is never taxed. Grossed up, a 4.82% offset is worth 8.03% to a higher-rate tax...

RSUs are taxed as employment income on the day they vest, at the market value of the shares. HMRC's own example withholds 42%. On a £90,0...

Experian scores you 0 to 1250, ClearScore 0 to 1000, Credit Karma 0 to 710 — three scales over three different files. The lender you appl...

The UK has four tax-advantaged share schemes and they are charged at three different rates plus nil. On the same £100,000 of value, a hig...

Allocation decides what you own. Location decides how much of it you keep. In the 2026 to 2027 tax year a higher-rate taxpayer pays 40% o...

Platform fee, fund charge, dealing costs inside the fund, spread, currency conversion, stamp duty, tax. Seven layers, seven different uni...

Two real published factsheets, read line by line. The 0.19% charge that excludes dealing costs, the benchmark that comes in two versions,...

One marginal £1,000 of gross salary buys £900 of pension or £720 of ISA at basic rate in 2026 to 2027. Which one is worth more at the end...

Build the number from what retired households actually spend, subtract the State Pension, and divide what's left by a withdrawal rate. On...

Banz documented the size effect in 1981, making it the oldest anomaly in finance. Since April 1981 the Fama/French size factor has compou...

A £100,000 pot at 65 bought £8,040 a year for life in August 2026. Drawing the same income from an invested pot empties it at 83.4 on a 5...

An individual bond repays par on a date; a bond fund never matures. Priced on 2022’s 236 basis point move in the 10-year Treasury yield, ...

A commodity futures index pays you three things: the futures price, the roll, and interest on the collateral. From 2 January 1991 to 31 J...

Over 1866-2008 corporate credit spreads averaged about 153 basis points a year while actual default losses averaged roughly 75. The rest ...

A critical illness policy doesn’t pay because you’re seriously ill. It pays because a histology report or a troponin assay matches a defi...

Seven UK platforms charge between 0.25% and 0.99% to turn pounds into dollars, and every one of them quotes that margin over a rate you c...

An Irish-domiciled S&P 500 fund and a US-domiciled one hold the same shares. For a UK investor both give up 15% of the US dividends, beca...

A multiple of salary contains no term, and the term is most of the answer. The needs calculation has four lines: debts to clear, years of...

Sort US stocks by beta and the riskiest tenth has returned less than the safest tenth since 1963 — 9.53% a year against 10.79%, at more t...

The backdoor Roth is two steps and an afternoon. Whether the second step costs nothing or thousands depends on money you never touched, b...

Selling outside a wrapper and buying back inside one crystallises a gain today to buy tax freedom later. On a £20,000 holding with an £8,...

Your broker isn’t the owner of your shares and neither are you. A nominee company holds legal title, you hold the beneficial interest, an...

The annual allowance is £60,000 for 2026 to 2027, and it counts your employer's contributions too. Above £260,000 of adjusted income it f...

A required minimum distribution is one division: last 31 December's balance, divided by a number from the IRS Uniform Lifetime Table. At ...

Salary sacrifice and an ordinary pension contribution attract identical income tax relief. National Insurance is the entire difference: 8...

Index funds lend their holdings out for a fee, and the manager keeps a share of it. That share runs from 7.7% at Vanguard's Irish range t...

The ongoing charges figure is the smallest line on the bill. Build the stack from the published disclosures — the fund's own dealing cost...

Every rate, band, allowance and threshold a UK investor needs for the 2026 to 2027 tax year, in tables, each figure read off a gov.uk or ...

A Class 3 voluntary National Insurance year costs £956.80 in the 2026 to 2027 tax year and adds about £6.89 a week to the state pension f...

For the 2026 tax year the IRS caps 401(k) salary deferrals at $24,500 and total IRA contributions at $7,500. The gap in headline limits i...

Two share classes of one fund hold identical assets and charge an identical 0.23%. Outside an ISA the accumulating one taxes you on incom...

Duration says a bond loses its duration number in percent for every point yields rise. On a 100bp move that is close enough. On the move ...

An ETF tracks its net asset value because a handful of firms can swap the fund for its contents. They are not obliged to. Grayscale's bit...

FSCS compensates you when an authorised firm fails, not when your investment falls. Deposits are covered to £120,000 and investments to £...

Insurers accepted 86% of individual income protection claims on 2024 data, against 98% across protection as a whole. The gap sits in two ...

Index-linked gilts and TIPS uprate your principal against a price index published three months earlier. In 2022 that lag paid more than t...

The 2026 to 2027 ISA allowance is £20,000, and almost every guide stops there. The rules that actually cost people money sit underneath i...

Momentum is the largest of the classic equity factor premiums — 6.19% a year in the Fama/French series since 1927, against 3.59% for valu...

UK pension tax relief arrives by one of two mechanisms, and your employer picked yours. Relief at source adds 20% to the pot and stops th...

A swap-based ETF exposes you to a bank. UCITS caps that exposure at 10% of assets, and the big providers reset it to zero every trading d...

The headline platform fee is one of six charges, and it decides the ranking only over a narrow range of portfolio sizes. Build the full s...

In 2022 US equity REITs returned -24.95% and the appraised MSCI UK Annual Property Index returned -7.1%. Almost none of that gap is the b...

Two S&P 500 ETFs, one charging 0.03% and one charging 0.12% all-in. In calendar 2025 the expensive one beat the index by 0.32 points and ...

UK income is taxed in a fixed order: salary and pension first, savings interest next, dividends on top. That order, plus three allowances...

The nil rate band is £325,000 and the residence nil rate band adds £175,000, both frozen to April 2031. Above £2,000,000 the residence ba...

Sell part of a holding you built at different prices and HMRC decides which shares went, not you. The order is fixed: same day, then the ...

Fama and French documented the value premium in 1992. Their own HML series compounded at 4.84% a year across the sample they studied, and...

Section 1091 disallows a loss if substantially identical stock is acquired within 30 days either side of the sale. The loss usually survi...

Every inverted US yield curve since 1966, matched to the recession that followed it. The lead times run from 5 months to 39 months, two i...

A five-asset portfolio rebalanced each December scored 0.43 on Sharpe from 1972 to 2014. A 20% tolerance band scored 0.40 at the same cos...

A 1% bitcoin sleeve added 0.64 points a year to a 60/40 since 2015 and a 5% sleeve added 3.19. Shift the start to 2025 and the 5% sleeve ...

US retirees with $500k kept 88% of it after 20 years. English financial wealth falls 31% between 70 and 90 while remaining life falls 75%...

A 3.9% withdrawal rate implies 25.6 times spending; 3.3% implies 30.3 times. The reciprocal arithmetic, its steepness, and what a State P...

Vanguard's 92-year test: a 60/40 rebalanced yearly returned 8.19%, never rebalancing 8.74%. The rebalancing bonus is mostly risk control,...

A total loss at 5% weight needs a 5.26% gain elsewhere. What Bessembinder, Kelly and Thorp show about sizing assets that can plausibly re...

In a 1997 experiment, people shown results every round bet 50.5% of their money. Those shown results every third round bet 67.4%. Same od...

Gold miners beat bullion by 2.3 points a year over the decade to May 2026. Strip out one year and gold wins. What each exposure tracks, c...

Specialised ETFs lost 30% risk-adjusted in five years post-launch. What fund-flow data says about returns after investors pile in, and wh...

Overconfident investors trade more and earn less. What the Barber and Odean turnover evidence measures, what it costs, and where the mech...

Vanguard tested lump sum against 12-month cost averaging across three markets from 1976 to 2022. Investing at once won 61.6% to 73.7% of ...

A 50% fall needs a 100% gain. What that cost in real drawdowns since 1871, why bonds are not exempt, and why the arithmetic alone ranks n...

The 2.25 loss aversion coefficient came from 25 graduate students in 1992. A 607-estimate meta-analysis says 1.96. A re-analysis of it sa...

Harvard's bitcoin ETF was 21% of its 13F and 0.8% of its endowment. What institutions really allocate to crypto, and why that case doesn'...

Gold set a record $5,405 fix in January 2026. What 58 years of LBMA data show about buying at a record high versus holding a fixed rebala...

UK rate cards priced out: £99 versus £15 to convert £10,000, custody from £72 to £350 on £100,000, and a 0.56-point withholding tax gap a...

Returns in the decade around retirement explain most of the lifetime result. The evidence on why, and what de-risking into that window ac...

Extending a 60/40 to five sleeves cut modelled volatility from 15.7% to 12.4%, yet equities still supplied 76% of the risk. The diversifi...

Vanguard's FTSE 250 ETF charges 0.10% and trailed its index by 0.19 points. Where spreads, market impact, index turnover, cash drag and l...

Three allocations through five crashes on one 1928-2025 series: how far each fell, how long each stayed underwater in real terms, and wha...

Only 42.6% of US stocks beat Treasury bills over their lifetimes. What that record, and a 42% diversification cost estimate, mean for emp...

UK easy-access accounts passed on 28% of the base rate rise; notice and fixed terms passed 51%. How emergency cash homes compare on acces...

Cash buffers give up about 6% a year in real return. But since 1948 a 20% drawdown was twice as likely in months when unemployment was ri...

The classic answer is 30 stocks, from variance reduction. Bessembinder found 4.31% of US firms created all net market wealth. Two very di...

Investors realise 14.8% of paper gains but only 9.8% of paper losses. The evidence on the disposition effect, what it costs, and the case...

A wait-for-the-dip rule tested against steady monthly investing on 100 years of daily US market and Treasury bill data. The threshold dec...

Gold rose 67% in 2025 while bitcoin fell 6%. What regressions, panel data and central bank buying really show about the fiscal debasement...

Why the standard rule hedges foreign bonds and leaves equities unhedged, the volatility maths behind it, and how a UK, US or Japanese bas...

A 5% tolerance band around a 5% bitcoin sleeve fired 516 times in ten years. The same band on the equity sleeve fired five times. The gap...

A correlation of 0.50 reads as 0.21 in calm months and 0.62 in volatile ones. Why estimated diversification decays, and how the equity-bo...

A 10% bitcoin satellite supplied 28.1% of portfolio variance over ten years. Gold at the same weight supplied 2.2%. Tracking error explai...

At a 5% real return, annual gains first beat annual contributions in year 16 and cumulative gains in year 27. Neither date moves if you s...

New money can hold a 60/40 on target until the portfolio passes about 17 times annual savings. Past that, the median year's drift outruns...

Central banks bought 863.3 tonnes of gold in 2025, down 21%. What the official-sector data shows, and why reserve-manager motives don't r...

US bills returned 0.5% a year after inflation since 1900 against 6.6% for equities. What a permanent cash sleeve costs, and whether waiti...

Bucket strategies mostly lose to a rebalanced portfolio. Across 21 countries and 115 years, a five-year cash reserve failed 27.9% of 30-y...

Bitcoin's volatility fell from 58.3% to 47.5% after US spot ETFs launched, but its weekly correlation with the S&P 500 moved 0.002. The e...

Bitcoin's weekly correlation with the S&P 500 rose from 0.04 to 0.52. With gold it is 0.11 over a decade. What the stress episodes since ...

Vanguard holds 50% equities at 65 where the 100-minus-age rule says 35%. What provider glide paths, human capital research and the critic...

Eight major US drawdowns from the December 1968 peak onward. The median took 31.5 months to reach a new high in nominal price terms and 6...

Across the six times developed-world equity fell 20% or more since 1990, 10-year Treasuries and Treasury bills carried almost all of the ...

US stocks in the 1970s and the 1980s had annualised standard deviations of 13.41% and 13.17% — as close to identical as two decades get. ...

The three-to-six-month range traces to financial-planning practice, not to a study. What has been measured is how long unemployment lasts...

Over 30 years at a 6.6% gross return, a 1% annual fee turns a £640,667 pot into £503,236. The £137,431 gap is 21.5% of the lower-fee bala...

Five funds — a total-market fund, an S&P 500 fund, a growth fund, a tech fund and an innovation fund — hold 1,533 companies between them,...

The United States was 62.09% of world equity value at 30 June 2026; Australia was 1.56%. That single fact makes the home-bias question a ...

Across 16 countries since 1870, housing's real total return of 7.05% a year edged equities' 6.89% with less than half the volatility. Tho...

An investment policy statement is a rule written before the decision arrives. CFA Institute lists 16 elements, CalPERS runs 120 pages, an...

A 60/40 portfolio left alone ends the year a median 3.2 percentage points off target. But the distribution is lopsided: the biggest singl...

Equities are down 30% and a 60/40 has drifted to roughly 50/50. Moving it back to target beat leaving it alone in both October 2008 and M...

A questionnaire says you are 'moderate'. It's measuring how you feel about risk, not how much of it your plan can absorb, and those answe...

The 4% rule came out of one country's data, one 50-year sample and one rigid spending rule. Run the same test across 17 developed markets...

Run 30 years of real US 60/40 returns forwards and backwards. A $1,000,000 lump sum left alone ends at exactly $5,116,739 either way. Add...

Three funds at Vanguard's own 60/40 target weights returned 6.44% a year from 2008 to 2025, or 3.91% after inflation. Nominally 2008 was ...

Willing to cut spending when markets fall? Morningstar's 2025 modelling puts the reward at 5.2% instead of 3.9% on the same portfolio. Th...

The folklore says your own timing costs you 4% a year. Morningstar's data says 1.2%. A 2026 Financial Analysts Journal paper says the par...

The weekly digital-asset fund-flow series is widely quoted and routinely misread. Sector AuM fell US$19bn in three weeks of 2026 while ne...

Battery capacity above 4 TWh, 1.7 mb/d of displaced oil, 7 million charge points. Three of the transition's headline metrics never reach ...

Euro area HICP went from 1.9% in February 2026 to 3.2% in May, then 2.8% in June and 2.9% on the July flash. Energy contributed 128 of th...

The research most often cited for a 5-10% gold weight tests 2.5% to 10%, over the 20 years from 2005. Widen the window and you find a 45-...

Maia 200 shipped in January 2026 with a full published spec. In the two quarters since, NVIDIA's gross margin rose and its data centre re...

Over 92 years of Vanguard's data, every sensible rebalancing rule landed within 0.2 percentage points a year of every other one. The choi...

Over 20 years, 92% of US large-cap funds trailed the S&P 500. But the odds swing from 70% over 20 years to 100% over 10 years in some cat...

The 2s10s spread closed at +45bp on 30 July 2026. It flattened 44bp into June and steepened 15bp in July — and in both legs every maturit...

US import prices from China fell 1.41% year on year in March 2026 while overall import prices rose 2.26%. Tariffs did not close the chann...

The OECD raised its 2026 US inflation forecast to 4.2% on an oil shock. Brent fell from $138.21 to $69.56 by 6 July 2026 and was back at ...

Kevin Warsh was confirmed 54-45 on 13 May 2026. The dot plot he may end already spans 100 basis points. Here is what its removal does to ...

Tokyo's first yen-buying intervention since 2024 moved USD/JPY 2.2% on 30 April 2026. Five weeks later the move was gone. A BoJ hike did ...

US unemployment fell to 4.3% in March 2026 — but the labour force shrank by 396,000 and wage growth hit a five-year low of 3.5%. The sign...

Total gold demand set a record at 5,002.3 tonnes in 2025 — up just 1%. Jewellery fell 18%, ETFs swung 804 tonnes, and central banks slowe...

Salesforce guided FY27 operating margin up to 20.9% GAAP. ICONIQ projects 2026 AI product gross margins at 52% — against Salesforce's own...

NVIDIA sold $75.2 billion of data-centre hardware in a single quarter. That figure is the hyperscalers' capital expenditure, and it becom...

ICONIQ data put gross margin on AI products at a projected 52% for 2026. Adobe's subscription gross margin is 91.1%. Software has acquire...

The IEA's Global EV Outlook 2026 puts 2025 electric car sales above 20 million, a quarter of all new cars. China sold more than 13 millio...

The IMF's April 2026 Fiscal Monitor puts global public debt at 93.9% of GDP, reaching 100% by 2029. The baseline is not the interesting n...

Google Cloud's operating margin reached 32.9% in Q1 2026, up from 17.8% a year earlier, while Alphabet's capital spending more than doubl...

The ICE BofA high-yield index spread closed at 2.84% on 30 July 2026, off its June tight. Underneath, the gap between CCC and BB spreads ...

The IMF sees 3.0% global growth in 2026 and the World Bank 2.5%. Read like for like, the two institutions are 0.1 percentage points apart...

NVIDIA's fiscal 2026 revenue was $215.9 billion with $193.7 billion from Data Center. Two customers were 36% of it, and the stock is 7.58...

The 10-year TIPS yield closed at 2.41% on 30 July 2026 and touched 2.44% three days earlier, its highest since October 2023. Almost the e...