Xearno Tools

What your app or game actually nets after Apple’s, Google’s, or Valve’s cut — including the 30 Jun 2026 Google Play restructure no AI model has memorized. Computes a developer’s real take-home on the App Store, Google Play, or Steam. General AI gets this wrong three ways. First, Google Play restructured its US/UK/EEA fees on 30 June 2026 — a 10%+5% / 25%+5% matrix keyed to when the user installed your app — which post-dates every model’s training data. Second, all three platforms have a “$1M tier” that works completely differently: Apple’s Small Business Program is opt-in with a prior-calendar-year eligibility test and a mid-year cliff; Google’s 15% bracket is automatic and marginal per calendar year; Steam’s tiers are marginal on per-app LIFETIME gross — models conflate the three into “15% under $1M”. Third, Apple’s EU (DMA) and US (external purchase links) fee situations are under active litigation, where a confident stale answer is the worst answer of all. This tool computes the exact net from the current schedules.

Nominal vs effective rates — what a quoted APR really costs at your compounding frequency. Converts between nominal APR and effective APY at any compounding frequency. This is the difference between what a rate is called and what it actually does to your balance.

Your compulsory HELP repayment under the new marginal system, what indexation adds each 1 June, and how the 20% cut and old rules compare. Computes your compulsory HECS-HELP repayment under Australia’s reformed 2025-26 system — a marginal calculation (nil to $67,000, then 15% and 17% slices, then a flat 10% of total income at the top) that replaced the old flat-percentage-of-entire-income scale. Three reforms landed within a year (the marginal flip, indexation recut to the lower of CPI/WPI backdated to 2023, and a one-off 20% balance cut in July 2025), so general AI still computes the old system on the old thresholds. The tool also names the input people get wrong: ATO “repayment income” is not your salary — reportable super contributions and net investment losses are added back.

Units and revenue needed to cover costs — and how much pricing moves it. Classic cost-volume-profit analysis: contribution margin, break-even units and revenue, margin of safety if you supply current volume, and the leverage a price change has on all of it.

Compound annual growth rate — the honest average that volatile returns hide behind. CAGR between a start and end value over a period, plus the reverse projection — and why CAGR beats "average return" for judging any investment or revenue history.

What a car actually costs you a month — priced for your market, where tax may or may not already be in the sticker. A car payment depends on something most calculators quietly assume: whether tax is added at purchase or already sitting in the advertised price. In the US, Canada and Japan it is added on top — and in most US states a trade-in is credited before tax is worked out. In the UK, the EU, Australia, Singapore and India, VAT or GST is already inside the sticker, so adding it again overstates the loan by the full tax rate. Pick the market and the rest follows, together with the negative-equity warning the dealership finance office will not give you.

Your real China take-home month by month — under the cumulative method, where the same salary is taxed more each month as the year goes on. Computes monthly and annual individual income tax (IIT) on a China salary using the actual cumulative withholding method (累计预扣预缴法). Because tax is recomputed on year-to-date income, the same gross salary is withheld more each month as cumulative income climbs the brackets — so your take-home falls through the year. Simple monthly-bracket calculators (and general AI) get every month after the first bracket crossing wrong.

Your exact retirement date under China’s 2025 delayed-retirement reform, plus an estimated monthly pension. Computes your statutory retirement age and date under China’s 2025 progressive delayed-retirement reform (渐进式延迟法定退休年龄) — which staggers the age by birth month, gender, and job track — then estimates your monthly pension (基础养老金 + 个人账户养老金). The reform is under two years old, so general AI still quotes the old 60/55/50 ages; this uses the official cohort tables.

Statutory severance under China’s Labour Contract Law — the N / N+1 / 2N branch and the 3×-average-wage cap, done right. Computes statutory economic compensation (经济补偿金) on leaving a job in China: the base N (one month per year of service, with the ≥6-month rounding), whether it becomes N+1 (pay in lieu of notice) or 2N (unlawful termination), and the two caps that switch on together for high earners — the base capped at 3× the local average wage and years capped at 12. The termination reason is the input that flips the answer, so it is the first question.

How much 五险一金 comes out of a China salary each month, and what it costs the employer on top. 五险一金 is not a percentage of this month’s pay, which is the assumption almost every calculator makes. Contributions are charged on a contribution base — your average monthly wage across the previous year — and that base is clamped between a floor of roughly 60% of the local average wage and a ceiling of 300% of it. The clamp is the whole story: it is why a high earner’s deduction stops growing past a certain salary, and why someone on a low wage pays a larger share of their pay than the headline rate suggests. Both numbers come out here — what leaves the payslip, and what the employer adds on top. Rates and both limits are set city by city and reset every July, so they are yours to enter; the defaults are Beijing 2025, for illustration.

What a starting amount plus monthly contributions grows into over time. Projects the future value of a lump sum plus recurring monthly contributions at a given annual return, compounded monthly. Splits the outcome into what you put in versus what compounding earned, and sanity-checks the assumptions.

What you actually net on YouTube, Twitch, Patreon, Substack, or OnlyFans — after the platform cut AND the processing layer nobody advertises. Computes a creator’s real monthly payout after every fee layer on five platforms. Platform fees drift constantly and general AI quotes stale ones — Patreon moved new creators to a flat 10% on 4 Aug 2025 (models still recite the old 5/8/12 tiers), Twitch restructured its split into Plus Points in 2024, OnlyFans changed its payout minimum in Apr 2026. And the advertised "platform cut" is never the whole story: payment processing adds 3–7 points on the subscription platforms, and the per-transaction fixed fee makes small pledges dramatically more expensive — a $3 Patreon pledge loses about 8% to processing alone, a $50 pledge about 3.5%. This tool computes the all-in take rate, which no advertised number states.

How long your balance really takes to clear — and the minimum-payment trap in numbers. Months and total interest to pay off a credit card balance at your APR and monthly payment, with the concrete payoff acceleration from paying more — the math credit card statements are legally required to hint at and everyone ignores.

Convert between 31 currencies at the official ECB reference rate — and know what your bank adds on top. Converts any amount between 31 major currencies using the European Central Bank daily reference rate — the neutral mid-market rate — and tells you the part every converter hides: the spread your bank or card will add on top of it.

Loan EMI, total interest, and the flat-rate trap that makes 10% cost like 18%. Equated Monthly Instalment for any loan — home, car, personal — with total interest over the tenure and the one warning every borrower comparing offers needs: flat rate and reducing-balance rate are not the same thing.

The portfolio that makes work optional, and how far away it is. Computes your financial-independence target from annual spending and a safe withdrawal rate, then projects how many years your current savings and monthly contributions take to reach it.

How many congés payés your sick-leave months actually earn under the April 2024 law — the opposite of what most of the internet still says. Computes the paid-holiday days (congés payés) you acquire in a reference period (1 June – 31 May) that includes sick leave, under France’s April 2024 reform (loi 2024-364 “DDADUE”, Code du travail L3141-3/-5/-5-1). Until that law, ordinary sick leave earned NO paid holiday — decades of French web pages and the AI trained on them still say so — but the law now says the opposite: ordinary sick months accrue 2 jours ouvrables per month (capped at 24 sick-accrued days per period) and work-accident/occupational-illness (AT/MP) months accrue the full 2.5, with the old one-year limit removed. The decisive input is the absence type — it changes both the rate and the cap — and the 15-month carry-over clock that only starts when your employer informs you decides whether the days survive at all.

The hourly rate that actually pays your target income — after unbillable time, overhead, and tax. Works backward from target income to the rate you must charge: subtracting non-billable time, business overhead, time off, and the self-employment tax gap that makes a freelance hour worth less than an employed one.

Your monthly Elterngeld under current BEEG law — the exact three-segment replacement rate, the €300–€1,800 clamp, and the cohort income caps (€175k / €200k / €300k) that changed twice in twelve months. Computes German parental allowance (Elterngeld): the eligibility income cap that depends on your child’s birth date (€175,000 for births from 1 April 2025; €200,000 for the year before; €300,000/€250,000 earlier — general AI quotes stale caps or invents a €150,000 single cap that has never existed), the exact BEEG §2 sliding replacement rate (67% only between €1,000–1,200 net — 65% above €1,240, up to 100% at low incomes), the €300–€1,800 Basiselterngeld clamp unchanged since 2007, ElterngeldPlus (half the amount, double the months), Geschwisterbonus, and Mehrlingszuschlag for multiples.

Add or extract GST — India slabs (5/12/18/28), Australia/NZ/Singapore/Canada rates. GST both directions — exclusive to inclusive and back — with the Indian slab structure (5/12/18/28%) and the single-rate systems (Australia 10%, New Zealand 15%, Singapore 9%, Canada 5% federal) built into the rate picker.

How much house you can afford — on the rule your lender actually uses, which differs between the US and the UK. Two countries give entirely different answers on the same income. US lenders underwrite on debt-to-income ratios — 28% of gross income on housing, 36% on all debt — which cap the monthly payment and let the loan fall out of it. UK and Australian lenders cap the loan itself at a multiple of income, around 4.5x, then stress-test the payment at a rate above the one you are quoted. This applies whichever rule is yours, and names the binding limit.

Hong Kong profits tax at 8.25%/16.5% for corporations or 7.5%/15% for unincorporated businesses, with the connected-entity election. Hong Kong does not simply charge every company 16.5%. An eligible corporation pays 8.25% on the first HK$2 million of assessable profits and 16.5% above; an eligible sole proprietorship or partnership pays 7.5% and 15%. But only one connected entity can elect the two-tiered rates for a year. This calculator makes that hidden eligibility branch explicit and shows the saving against the full rate.

Personal income tax for 24 countries/jurisdictions using current official progressive brackets: tax owed, effective rate, marginal rate, take-home pay. Countries: usa, uk, china, japan, germany, france, canada, australia, india, taiwan, south-korea, vietnam, thailand, indonesia, malaysia, spain, italy, portugal, brazil, mexico, argentina.

What your Hong Kong salary actually costs you in tax this year, after allowances — and whether the standard rate caps the bill. Hong Kong does not tax salaries with a bracket table. It runs two calculations and charges you the lower one: progressive rates of 2% to 17% on what remains after your allowances, or a flat standard rate on your income before any allowances at all — 15% on the first HK$5,000,000, 16% above it. Which one wins turns entirely on your allowances, so a married taxpayer with children crosses over at a far higher salary than someone single. Most calculators model only the progressive scale, and so does most AI, which is why both overstate the bill for higher earners, sometimes by a lot. This runs both, shows you which one binds and by how much, and takes off the year’s one-off reduction at the end.

2026 Dutch Box 1 salary tax after the general tax credit and employment tax credit — the two amounts generic calculators miss. Dutch headline rates are not the final bill. For employees below AOW age, 2026 Box 1 rates include national insurance, then the algemene heffingskorting and arbeidskorting reduce the tax substantially before phasing out as income rises. This salary-only calculator shows the tax before credits, each credit, the final amount, and take-home pay.

YA 2026 Singapore tax for residents, non-resident employees, and non-resident directors — including personal reliefs. Singapore tax depends first on residency. Residents use progressive rates up to 24% after eligible personal reliefs; non-resident employees pay the higher of 15% of employment income or the resident-rate calculation, while non-resident directors and most other non-resident income are taxed at 24%. This calculator runs the correct branch instead of silently assuming everyone is resident.

Statutory gratuity under the new Labour Codes — the 50% wage floor and the 1-year fixed-term gate that the old answer misses. Computes statutory gratuity under India’s Code on Social Security 2020, in force since 21 Nov 2025 (general AI often still says the Labour Codes are pending). The formula looks unchanged — wages × 15/26 per year of service — but two decisive inputs are hidden: the §2(88) wage definition floors the gratuity base at 50% of total remuneration when basic + DA is kept low (most modern salary structures), and fixed-term employees now qualify after just 1 year instead of 5. Both can turn the “obvious” answer from wrong to right by lakhs.

Your childcare-leave money under the April-2025 framework: 67% (then 50%) of daily wage, plus the new +13% top-up that lifts the first 28 days to 80% gross — with the exact caps valid 1 Aug 2026 – 31 Jul 2027. Computes Japanese childcare-leave benefits: the base 育児休業給付金 (67% of your daily wage for the first 180 benefit days, 50% after) and the 出生後休業支援給付金 introduced April 2025 — a +13% top-up on up to 28 days that lifts them to 80% gross, roughly 100% of normal net take-home once the tax and social-insurance exemptions are counted. General AI still answers 67% (the top-up postdates most training data) and garbles the condition’s asymmetry: the father’s +13% is satisfied automatically while the employed mother is on 産後休業 — it is the mother’s claim that needs the father to take ≥14 days (or a waiver). Uses the caps valid 1 Aug 2026 – 31 Jul 2027 (¥16,540 daily ceiling; ¥60,205 top-up cap per 28 days); every cap revises each 1 August.

Your monthly 육아휴직급여 under the 2025 reform — 100%/100%/80% with caps ₩2.5M/₩2.0M/₩1.6M, the 6+6 ladder to ₩4.5M, and the 25% withholding that no longer exists. Computes South Korean parental-leave benefit (육아휴직급여) under the rules in force since 1 January 2025: months 1–3 at 100% of ordinary wage capped ₩2,500,000, months 4–6 at 100% capped ₩2,000,000, months 7+ at 80% capped ₩1,600,000 — paid in full every month, because the 25% withheld-until-return (사후지급금) is abolished. When BOTH parents take leave for a child under 18 months, months 1–6 switch to the 6+6 scheme’s escalating 100% caps of ₩2.5M/₩2.5M/₩3.0M/₩3.5M/₩4.0M/₩4.5M per parent (the ladder ends at ₩4.5M — a ₩5.0M figure circulates and is wrong). Single parents get months 1–3 at 100% capped ₩3,000,000. General AI still describes the pre-2025 system (80% flat, ₩1.5M cap, 25% withheld) — all three facts are dead.

Monthly payment, total interest, and what paying extra saves. Standard amortized loan math: monthly payment, total cost, interest as a share of principal — plus a concrete extra-payment scenario showing time and interest saved.

Bottom-up market sizing with a built-in plausibility check. Builds TAM, SAM, and SOM bottom-up from customer count and revenue per account, then sanity-checks whether the implied customer acquisition is actually plausible — the check most pitch decks skip.

Your legal vacation days under the 2023 Vacaciones Dignas reform, plus the prima vacacional and year-end aguinaldo in pesos. Computes your statutory vacation days under Mexico’s Vacaciones Dignas reform (LFT Art. 76, in force 1 Jan 2023), the 25% prima vacacional (Art. 80), and the 15-day aguinaldo due by 20 December (Art. 87), pro-rated for partial years. The internet — and AI trained on it — is saturated with the pre-2023 table that gave just 6 days in year one; the reform doubled that to 12 and re-banded the rest, and the +2-days-per-five-years banding after year 5 is precisely where models and stale HR pages still get it wrong. All amounts use your base salary: the SDI (integrated wage) is for IMSS only, and using it here double-counts the benefits being calculated.

True monthly cost — principal & interest plus taxes, insurance, and PMI, not just the loan. Monthly mortgage payment from price, down payment, rate, and term — including the parts lender ads leave out: property tax, home insurance, and PMI when the down payment is under 20%. The headline number here is the full PITI cost of owning.

Whether you qualify for the Dutch 30% ruling, how much of your salary comes tax-free, and what changes when it drops to 27%. Whether the Dutch 30% ruling is worth 30% to you or 27% depends on one thing: the year it was first granted. Granted in 2023 or earlier and it stays at 30%, on the old salary threshold, for its whole term. Granted in 2024 and it falls to 27% in 2027 but keeps that old threshold. Granted from 2025 and it is 27% on the higher threshold from the start. General-purpose AI collapses all of this into “it’s 30%” or “it’s being scrapped”, and for most people both are wrong. The questions that actually decide it are narrow — when your ruling started, whether you lived more than 150km from the Dutch border before you moved, and how many months you had already spent in the country — and this asks them, then works out what comes to you tax-free.

Is this investment worth it — discounted, not vibes. Net present value, internal rate of return, payback period, and profitability index for a series of cashflows — the standard capital-budgeting toolkit, with the IRR pitfalls flagged instead of hidden.

Whether New York can tax you as a resident under the two-prong statutory test — the abode gate people miss, plus the 183-day count where any part of a day counts. For taxpayers NOT domiciled in New York: applies the deterministic statutory-residence test of NY Tax Law §605(b)(1)(B) — a permanent place of abode maintained for substantially all of the year AND more than 183 days of presence — plus the separate New York City test. General AI compresses this to "183 days = resident" and misses both gates: without a permanent place of abode, 300 days in NY doesn't make you a statutory resident, and with one, day 184 does — where a 20-minute stop in the state counts as a full day. Domicile (whether New York is your true home) is a separate facts-and-circumstances battle this tool does not decide.

Whether you qualify for Portugal’s IFICI — the activity-gated successor to the NHR regime that closed in 2024. Checks your eligibility for Portugal’s IFICI (Incentivo Fiscal à Investigação Científica e Inovação, widely called "NHR 2.0"): 20% flat tax on eligible-activity Portuguese income for 10 years, with most foreign income exempt. The old NHR closed to new entrants on 1 Jan 2024, yet general AI still tells people to "apply for NHR" and quotes its 10% foreign-pension rate — gone: IFICI taxes foreign pensions at full progressive rates. The real gate is an activity test across six routes with route-specific certifying entities (FCT, AT, ANI, Startup Portugal, AICEP) — this tool walks the gates in order and names the route, the certifier, and the registration deadline.

What a price really costs you: hours of your own work, at your take-home pay. Converts any price — a purchase or a subscription — into the hours and workdays of your own labor it consumes, using take-home pay rather than gross (you buy things with net money). For recurring costs it adds the yearly bill, the share of your working year, and what the same money becomes if invested instead. Time is the one budget everyone understands.

Margin vs markup, and what a discount really costs in volume. Computes gross margin and markup from cost and price — two numbers people constantly confuse — and shows the brutal volume math behind discounting at your margin.

How long your savings last after leaving a job — and whether new income overtakes costs before they run out. The personal version of a startup runway: savings, a quit-mode budget, the costs your employer was quietly covering (health insurance above all), and the income you’d be growing instead. Answers the two questions that matter: how many months you have, and whether the new income crosses your costs before month zero.

Return on investment, simple and annualized — comparable numbers instead of raw bragging. Simple ROI from cost and final value, annualized when you give it a time period — because "we doubled our money" means something completely different over 2 years versus 12.

How many months of cash remain, and when to start raising. Computes runway from cash and net burn, optionally with burn trending up or down monthly, and reads the result against fundraising realities: raises take 3–6 months, and 18–24 months post-raise is the norm.

Your end-of-service award under Saudi Labor Law Arts. 84–87 — the resignation ladder and the wage base, done right for KSA (not the UAE). Computes the end-of-service award (EOSB, مكافأة نهاية الخدمة) under Saudi Labor Law: the Art. 84 base (half a month per year for the first five years, a full month per year after, on the LAST actual wage), then the branch the termination reason selects — full award for employer-side endings, the Art. 85 ladder (0 / 1/3 / 2/3 / full at exactly 2, 5, and 10 years) for resignation, and ZERO for an Art. 80 misconduct dismissal. General AI reliably gets this wrong by porting UAE rules into KSA: the UAE abolished resignation reductions and uses basic-only wage; Saudi kept the ladder and uses the actual wage including allowances.

The monthly saving needed to hit a target by a deadline. Given a target amount, what you already have, a time horizon, and an expected return, computes the required monthly contribution — and shows what waiting a year would cost you.

Your monthly CPF deduction and operator top-up as a ride-hail or delivery platform worker — by birth cohort, vehicle, and the 2025–2029 rate ramp. Computes platform-worker CPF under Singapore’s Platform Workers Act (in force 1 Jan 2025) — a regime new enough that general AI either doesn’t know it or garbles it. Three inputs users never think to volunteer decide everything: your BIRTH DATE (born on/after 1 Jan 1995 → increased contributions are mandatory; born before → voluntary via an irrevocable opt-in, otherwise MediSave-only), your VEHICLE (the 60/35/20% fixed expense deduction moves the CPF base by 3× for the same gross), and the YEAR (rates ramp every January to full employee parity in 2029). It also gets right what models confidently invert: no monthly ceiling — unlike employees — but a $102,000/year net-earnings cap per platform operator.

Buyer’s, Additional Buyer’s, and Seller’s Stamp Duty at the current IRAS rates — including the 60% foreigner ABSD and the 2025 four-year SSD. Computes Singapore residential stamp duty at the rates actually in force: BSD on the marginal bands up to 6%, ABSD by your exact buyer profile and property count (foreigners pay a flat 60% since 27 Apr 2023 — double what most AI models still quote), and SSD by your acquisition-date cohort (purchases on/after 4 Jul 2025 are on a new 16/12/8/4 four-year schedule). The inputs that swing the answer are ones buyers rarely know matter: the citizenship tier (a US citizen gets Singapore Citizen treatment under the FTA; a US green-card holder does not), how many residential properties you already hold (any fractional interest counts in full), and for joint purchases, the co-buyer whose rate governs the entire price.

Systematic Investment Plan returns — with optional annual step-up, honestly assumed. Projects a monthly SIP (systematic investment plan) to its future corpus, splits invested amount from gains, and supports the annual step-up that matches how salaries actually grow.

Even split with tip, rounded so nobody argues. Splits a bill evenly across people with an optional tip, and shows the clean rounded amount plus who covers the remainder.

Turn an up-and-down income into a safe monthly salary and a right-sized buffer. For freelancers, tipped workers, sellers, and seasonal earners: paste your last months of income and get the salary you can safely pay yourself, how big a buffer your actual swings require, and which months were spikes to bank rather than spend. The pay-yourself-a-salary method every advisor teaches by hand, as a calculator.

Your monthly SSO contribution under the 2026 ceiling rise — the ฿15,000 cap stood for 30 years, so the old ฿750 answer is everywhere and wrong. Computes your Thai Social Security Office (SSO) contribution for Section 33 (employees), Section 39 (voluntary ex-employees), or Section 40 (informal workers). The Section 33 wage ceiling was frozen at ฿15,000/month from 1995 until the Royal Gazette announcement of 12 Dec 2025 raised it to ฿17,500 from 1 Jan 2026 — so the maximum employee contribution jumps from ฿750 to ฿875, with further phases to ฿20,000 (2029) and ฿23,000 (2032). Thirty years of the old number mean general AI and much of the Thai web still answer ฿750; this tool uses the phased schedule, and knows §39 stays on its frozen ฿4,800 base.