How Comparisons Are Built (Sources and Math)
Medians, deltas and vintages behind every side-by-side — read before citing.
Sources
Same public datasets as hubs, paired per metric.
- Medians matched vintage
- Deltas computed live
- Shareable canonical URLs
Limits
Averages hide distributions; counties differ.
Deep dive: arbitrage math for movers
Spread = (pay kept) − (cost delta) − (friction). Friction (moving, deposits, job risk) eats year-one gains, so model 3-year totals. Remote workers capture full spreads; relocators must verify local pay first. Tax, housing, insurance, childcare: miss one and the spread inverts.
- 3-year totals, never year-one
- Remote captures most
- Verify local pay always
- Friction budgeted upfront
Case files: $120k remote mover
CA→TX: +$15k tax kept, −$24k housing, −$4k insurance swing = ~+$35k/yr spread. CA→FL similar with storm costs.
| Move | Annual spread |
|---|---|
| CA → TX remote | +~$35k |
| NY → FL remote | +~$30k |
| CA → TX local pay | +~$10k |
| Any → MS value | +varies |
Advanced tactics
- Rent-first scouting year
- Negotiate remote premium
- Time off-season leases
- Keep exit options
Glossary deep cuts
- Spread vs savings
- Friction costing
- Domicile proof
- Trailing nexus
Spread visual
Illustrative annual spreads for remote movers.
Source: lifeindexdata.com · © 2026 LifeIndexData · Illustrative spread ($k/yr)
Corridor spotlights: five classic moves
The reasoning behind each famous pairing.
- CA→TX: tax + housing arbitrage for remote earners.
- NY→FL: finance portability plus sun discount.
- WA→TX: no-tax lateral with housing relief.
- IL→TN: Midwest value with music-city growth.
- CA→CO: mountain premium at discount to coast.
Year-in-review method: auditing your location
Recompute spread yearly: pay delta, housing delta, tax delta, friction. Spreads decay as crowds follow — early movers bank most. Keep domicile clean and revisit before renewals.
- Spread recompute
- Crowd timing check
- Domicile hygiene
- Exit option kept
Expert roundup: what migration watchers track
Cost spreads first, remote policy second, climate costs third. U-Haul rates and permit data front-run Census by a year.
The complete relocation dossier
Build once, decide forever: net-pay model both sides, housing stack both sides, tax totals, insurance quotes, school/care maps, commute trials, worst-season visit notes, exit options. Score 1–5 weighted by life stage. Decide on 3-year totals with 20% margin — thin spreads do not survive moving friction and surprise costs.
- Eight-part dossier
- Weighted scoring
- 3-year totals + margin
- Exit kept open
Post-move audit
Recompute spread at 6 and 18 months. Drift sources: lifestyle inflation, insurance creep, tax reassessment, commute reality. Correct early (downsize costs, renegotiate, re-shop) rather than rationalizing. Successful movers audit; unsuccessful movers narrate.
| Check | When |
|---|---|
| Spread recompute | 6 + 18 months |
| Insurance re-shop | Yearly |
| Tax reassessment watch | Ongoing |
| Lifestyle drift audit | Yearly |
Scouting trip protocol
Three days minimum: one workday commute at rush both ways, one school/services day, one night/weekend vibe check. Grocery run, insurance agent visit, neighborhood walks after dark, local paper scan. Score nightly 1–5 per factor — memory lies within a week.
- Rush commute both ways
- Services + schools day
- After-dark walks
- Nightly scoring
Offer-letter relocation negotiation
Relocation packages: lump sum vs managed, temporary housing length, house-hunting trips, spousal support, tax gross-up, payback clawback windows. Negotiate BEFORE signing; everything is flexible once, never after.
First-90-days landing plan
Short lease, essentials first (care, schools, banking, license), network building (one group, one routine, one neighbor), 6-month recompute. Land soft, decide hard data later.
- Short lease buffer
- Essentials week one
- Network routines
- 6-month recompute
Spread worksheet: fill before any move
Print and complete with live numbers — decisions without worksheets are wishes.
| Line | State A | State B |
|---|---|---|
| Gross pay | ___ | ___ |
| Take-home pay | ___ | ___ |
| Housing cost | ___ | ___ |
| Property tax | ___ | ___ |
| Insurance | ___ | ___ |
| Sales tax est. | ___ | ___ |
| Commute cost | ___ | ___ |
| Childcare delta | ___ | ___ |
| Moving cost | ___ | ___ |
| 3-yr net spread | ___ | ___ |
Research notes: post-move audit protocol
Recompute at 6 and 18 months against the original worksheet. Drift sources rank: lifestyle inflation first, insurance creep second, reassessment third. Correct early with downsize/renegotiate/re-shop levers — successful movers audit, unsuccessful movers narrate.
Neighborhood scoring matrix
Score 1–5: commute reality (trialed), schools (visited), safety (walked day + night), groceries/healthcare proximity, noise/air (multiple visits), social fit, price trajectory. Weight by life stage, total, revisit top two. Spreadsheets beat vibes; visits beat spreadsheets.
- Trialed commutes
- Day + night walks
- Service proximity mapped
- Scored, not vibed
Cost-of-move calculator inputs
Movers, deposits, overlap rent, travel, utility setups, license/registration, time off value, pet transport, cleaning both ends, buffer 15%. Moves cost 2× gut estimates — budget the real number or finance stress with interest.
| Line | Budget |
|---|---|
| Movers/DIY | $1–8k |
| Deposits + overlap | 1–2 months |
| Travel + time off | Varies |
| Setups + buffer 15% | Varies |
Trailing family success kit
Partner career plan before boxes, school enrollment timed, social infrastructure (one group, one routine, one neighbor in 30 days), homesickness protocol. Moves fail socially more than financially — engineer belonging deliberately.
Expat-lite: cross-country adaptation
Banking + mail + doctors + license + voter + emergency contacts rebuilt week one. Culture shock peaks month three — scheduled routines carry through. Annual home-base trips budgeted, not guilted.
- Week-one rebuild list
- Month-three protocols
- Annual trip budget
- Domicile hygiene
Case files: $120k remote mover — visual
Source: lifeindexdata.com · © 2026 LifeIndexData
Frequently asked questions
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Medians, deltas and vintages behind every side-by-side — read before citing.
How current are the figures?
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LifeIndexData. "How Comparisons Are Built (Sources and Math) (2026)" (2026). https://lifeindexdata.com/blog/compare-methodology/
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