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Bills & Energy
Isolate annual bill impact from unit-rate and standing-charge changes at constant usage.
Changing currency affects display formatting only. FinTrex does not convert exchange rates or mix currencies inside a calculation.
FinTrex result
Tariff Change Impact
Modeled annual bill increase
$131
Old modeled annual bill
$1,144
New modeled annual bill
$1,275
What changes this most?
Compare both unit rate and standing charge; their relative impact depends on how much energy the household uses.
Sensitivity check
A roughly 10% move in new unit rate per kwh changes the modeled headline result by up to $109 in this setup.
This keeps annual usage fixed so the result isolates tariff changes.
Use the number fields, sliders, or a quick preset. You can fully clear a field while editing.
Formula
Old and new annual bills are calculated from the same annual kWh plus each unit rate and standing charge.
Holding annual usage constant isolates the tariff change. Actual use can change with weather or behavior.
Editable rates, growth assumptions, prices, fees, and percentages are planning inputs unless the calculator explicitly identifies a current source.
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