Simple (Flat Rate) Interest Calculator: Calculate the Annual Simple (Flat) Interest Rate of the Invested Amount of Money (Principal, Initial Starting Amount Lent, Deposited or Borrowed), of 17,834 units (Dollar, Euro, Pound, etc.) To Produce a Sum of Money of 400 units, for a period of 641,335 days (21,071 Months). The transaction fee is 0.5%
Detailed calculations of the simple (flat) interest rate
Notations and variables used:
Principal (initial amount), P = 17,834
Amount produced by the interest, I = 400
From date: Aug 25, 260
To date: Jul 25, 2016
Duration, T = 641,335 days (21,071 Months)
Transaction fee rate, F% = 0.5%
Transaction fee amount, F
Number of days in a year, N = 365
Calculate R, the annual simple (flat) interest rate to earn the amount I
The simple (flat rate) interest calculation formula:
I = (P × R × T) ÷ N ⇒
R = (N × I) ÷ (P × T) =
100% × (N × I) ÷ (P × T) =
((100 × N × I) ÷ (P × T))% =
((100 × 365 × 400) ÷ (17,834 × 641,335))% =
(14,600,000 ÷ 11,437,568,390)% ≈
0.001276495099% ≈
0%
Calculate E, the amount earned after adding to the principal the amount produced by the simple (flat rate) interest
E = P + I =
17,834 + 400 =
18,234
Calculate L, the amount left after deducting the transaction fee
F = F% × E ⇒
L = E - F =
E - F% × E =
(1 - F%) × E =
(1 - 0.5%) × 18,234 =
99.5% × 18,234 =
18,142.83
Calculate Pr, the profit of the investment
Pr = L - P =
18,142.83 - 17,834 =
308.83
Used symbols: % percent, ÷ divide, × multiply, = equal, ≈ approximately equal.
Writing numbers: comma ',' used as thousands separator, point '.' used as a decimal mark.
Simple (flat) interest rate, more calculations:
Calculator: annual simple interest rate to negociate to earn a certain amount
Annual simple flat interest rate = (Simple flat rate interest × Number of days in a year) ÷ (Principal × Duration in days)