lending.loan-payment Unreviewed
Level repayment for a loan (annuity formula), computed exactly and rounded once, the way you choose.
loanPayment in TypeScript
1.0.1
py rs ts
23 tests
lending.ltv Unreviewed
Loan-to-value ratio in basis points, and the band it falls in from a band table you supply.
loanToValue in TypeScript
1.0.1
py rs ts
17 tests
lending.overpayment-effect Unreviewed
What a one-off overpayment does to a loan: a shorter term at the same payment, or a lower payment over the same term.
overpaymentEffect in TypeScript
1.0.1
py rs ts
14 tests
lending.affordability Unreviewed
Debt-to-income and a stressed-rate affordability test for a proposed loan's monthly repayment.
affordability in TypeScript
1.0.1
py rs ts
13 tests
lending.apr Unreviewed
Consumer-credit APR from drawdowns and repayments, by the FCA CONC App 1.2.6 equation, to one decimal place.
apr in TypeScript
1.0.1
py rs ts
22 tests
lending.amortisation-schedule Unreviewed
Repayment schedule for a level-payment loan: interest, principal and balance per period, ending at exactly zero.
amortisationSchedule in TypeScript
1.0.1
py rs ts
13 tests
lending.early-settlement Unreviewed
Early settlement figure and rebate on UK regulated consumer credit, per the Early Settlement Regulations 2004.
earlySettlement in TypeScript
1.0.1
py rs ts
18 tests
lending.daily-interest Unreviewed
Interest accrued day by day on a changing balance under a day-count convention, summed exactly and rounded once.
dailyInterest in TypeScript
1.0.1
py rs ts
21 tests
property.mortgage-affordability Unreviewed
Mortgage affordability: the loan-to-income multiple and a stress-tested repayment against income, both checked.
mortgageAffordability in TypeScript
1.0.1
py rs ts
13 tests
insurance.instalment-plan Unreviewed
Pay a premium by monthly instalments: deposit, flat credit charge, instalments exact to the penny, and the APR.
instalmentPlan in TypeScript
1.0.1
py rs ts
15 tests
banking.overdraft-interest
Overdraft interest for a statement period from daily balances, with an interest-free buffer.
overdraftInterest in TypeScript
1.0.0
py rs ts
15 tests
legal.statutory-interest Unreviewed
Statutory interest on a judgment debt (8% simple, daily) or a late commercial debt, England and Wales.
statutoryInterest in TypeScript
1.0.1
py rs ts
19 tests
finance.margin
Profit on a sale with both the margin and the markup, so the two are never confused.
margin in TypeScript
1.0.0
py rs ts
13 tests
charity.donation-matching
Employer match on a donation: a ratio in basis points, limited by a per-donor cap and a programme budget.
donationMatch in TypeScript
1.0.0
py rs ts
17 tests
money.allocate
Split an amount across ratios without losing or inventing a single minor unit.
allocate in TypeScript
1.0.1
py rs ts
17 tests
finance.compound-interest
Compound interest accrued period by period in minor units, the way a statement is built.
compoundInterest in TypeScript
1.0.0
py rs ts
18 tests
payroll.student-loan Unreviewed
Student loan or postgraduate loan deduction from one period's pay, by plan, rounded down to whole pounds.
studentLoan in TypeScript
1.0.2
py rs ts
24 tests
finance.accruals-prepayments
Split an invoice across accounting periods by days of service, for accruals, prepayments and deferred income.
allocateToPeriods in TypeScript
1.0.0
py rs ts
17 tests
retail.loyalty-points
Loyalty points for a purchase: redeem in blocks, earn on what is paid, with tier multipliers.
loyaltyPoints in TypeScript
1.0.0
py rs ts
19 tests
education.student-loan-repayment
A graduate's student or postgraduate loan repayment for a tax year, as Self Assessment works it out.
studentLoanRepayment in TypeScript
1.0.1
py rs ts
21 tests
finance.early-payment-discount
Early settlement discount available on a payment date under "2/10 net 30" style terms, and the amount to pay.
earlyPaymentDiscount in TypeScript
1.0.0
py rs ts
16 tests
hospitality.tronc-allocation
Share a tips pool (tronc) between staff by hours worked, points, or hours times points, exactly to the penny.
troncAllocation in TypeScript
1.0.0
py rs ts
19 tests
finance.proration
Split an amount into the part used and the part unused over a billing period, losing nothing.
prorate in TypeScript
1.0.0
py rs ts
16 tests
legal.retainer-drawdown Unreviewed
Apply money held on account in client account to bills in order: what each bill takes, what stays due, what is left.
retainerDrawdown in TypeScript
1.0.1
py rs ts
11 tests
money.apply-rate
Apply a rate expressed in basis points to a monetary amount, with an explicit rounding mode.
applyRate in TypeScript
1.0.1
py rs ts
22 tests
money.add
Add, subtract and negate monetary amounts, refusing to mix currencies.
addMoney in TypeScript
1.0.1
py rs ts
12 tests
property.service-charge-apportion Unreviewed
Apportion a service charge across units by lease fraction, floor area or fixed percentage, exact to the penny.
apportionServiceCharge in TypeScript
1.0.1
py rs ts
19 tests
banking.savings-aer
AER (annual equivalent rate) from a gross nominal rate and how often interest is paid, to two decimal places.
savingsAer in TypeScript
1.0.0
py rs ts
14 tests
charity.restricted-funds
Allocate charity spending to restricted funds first, then unrestricted funds, never overdrawing a restricted fund.
allocateFundSpend in TypeScript
1.0.0
py rs ts
17 tests
retail.promotion-apply
Apply BOGOF, 3-for-2, percent off, amount off and multibuy deals to a basket, best for the customer, allocated to lines.
applyPromotions in TypeScript
1.0.0
py rs ts
23 tests
banking.fees-cap
Apply a monthly fee cap to a list of account charges: charge up to the cap, waive the rest.
applyFeeCap in TypeScript
1.0.0
py rs ts
18 tests
finance.depreciation-reducing-balance
Reducing-balance depreciation schedule at a fixed rate, writing off to the residual value in the final year.
reducingBalanceDepreciation in TypeScript
1.0.0
py rs ts
17 tests
retail.refund-calculate
Refund for returned items, sharing basket discounts back across the sale so every refund is exact to the penny.
calculateRefund in TypeScript
1.0.0
py rs ts
16 tests
retail.gift-card-balance
Apply a payment from a gift card, redeeming part of the balance or all of it, and say what is still due.
redeemGiftCard in TypeScript
1.0.0
py rs ts
11 tests
money.convert
Convert an amount to another currency at a supplied exact rate, with an explicit rounding mode.
convertMoney in TypeScript
1.0.0
py rs ts
19 tests
finance.markup-price
Selling price from a cost and a target margin or markup in basis points, with explicit rounding.
markupPrice in TypeScript
1.0.0
py rs ts
21 tests
subscriptions.ltv-cac
Customer lifetime value, LTV to CAC ratio and CAC payback months from ARPA, gross margin, churn and CAC.
ltvCac in TypeScript
1.0.0
py rs ts
14 tests
insurance.loss-ratio Unreviewed
Loss ratio, expense ratio and combined ratio in basis points, from earned premium, incurred claims and expenses.
lossRatios in TypeScript
1.0.1
py rs ts
12 tests
construction.cis-deduction
Construction Industry Scheme deduction (0, 20 or 30%) on the labour part of a subcontractor payment.
cisDeduction in TypeScript
1.0.2
py rs ts
24 tests
banking.faster-payments-limit
Whether a Faster Payment fits the scheme maximum, the bank's per-payment limit and what is left of its daily limit.
fasterPaymentsCheck in TypeScript
1.0.1
py rs ts
24 tests
money.split-even
Split an amount into n near-equal parts that add back up to exactly the whole.
splitEven in TypeScript
1.0.0
py rs ts
13 tests
property.holding-deposit-cap Unreviewed
Maximum holding deposit to reserve a rental property: one week's rent (annual rent ÷ 52), rounded down.
holdingDepositCap in TypeScript
1.0.1
py rs ts
11 tests
education.fee-instalments
Tuition fee instalment schedule from a total, shares and due dates, exact to the penny.
feeInstalments in TypeScript
1.0.0
py rs ts
20 tests
finance.bank-reconcile-match
Match bank statement lines to ledger entries by exact amount, a date window and reference similarity, deterministically.
matchBankLines in TypeScript
1.0.0
py rs ts
19 tests
1.0.0
py rs ts
15 tests
construction.roof-pitch
Roof pitch in degrees, rafter length and roof slope area from span, rise and length.
roofPitch in TypeScript
1.0.0
py rs ts
15 tests
finance.ledger.trial-balance
Trial balance from journal lines: debit or credit balance per account, and proof that debits equal credits.
trialBalance in TypeScript
1.0.0
py rs ts
13 tests
property.rent-proration Unreviewed
Rent for part of a month from the monthly rent, by the annual-daily or the calendar-month method.
prorateRent in TypeScript
1.0.1
py rs ts
21 tests
finance.credit-note.calculate
Credit note against an original invoice, by units or by amount, with VAT at the original tax point's rates.
calculateCreditNote in TypeScript
1.0.0
py rs ts
21 tests
retail.shipping-rate
Delivery charge from a dated rate table by service, zone, chargeable weight and size, with a free-over threshold.
shippingRate in TypeScript
1.0.1
py rs ts
20 tests