(12C) Total Sales Tax With Rounded Amounts

[Eddie W. Shore]

This program allows to calculate the total of sales invoice with the sales tax rounded to 2 decimal places, regardless of how the FIX setting is set.

Instructions:
1. Enter the tax rate.
2. Press [ f ] (PRGM), [R/S]
3. Enter the item's cost, press [R/S]
4. For subsequent items, enter the cost, then [R/S]
5. When finished, press [RCL], 1 to recall total rounded sales tax. Press [RCL], 2 to recall the total invoice.

I have program set to pause to show the rounded sales tax when each cost is entered.

Program:

Code:


(Step ##: key code, key)
01:  44,0  STO 0
02:  42, 2  FIX 2
03:  35,  CLx
04:  44, 1 STO 1
05:  44, 2 STO 2
06:  31  R/S
07:  45, 0  RCL 0
08:  25   %
09:  1     1
10:  26   EE
11:  2     2
12:  20   *
13:  36   ENTER
14:  43, 24  FRAC
15:  48    .  (decimal point)
16:  5      5
17:  34   x<>y
18:  43, 34  x≤y
19:  43, 33, 23  GTO 23
20:  33   R↓
21:  40   +
22:  43, 33, 25   GTO 25
23:  33  R↓
24:  33  R↓
25:  43, 25  ITNG
26:  1    1
27:  26  EEX
28:  2     2
29:  10   ÷
30:  43, 31   PSE
31:  44, 40, 1   STO+ 1
32:  40   +
33:  44, 40, 2   STO+ 2
34:  31   R/S
35:  43, 33, 07  GTO 07

Example:
Sales Tax Rate: 9.5%
Item Costs: $14.35, $18.99, $39.99, $23.64

Keystrokes:
9.5 [ f ] (PRGM) [R/S]
14.35 [R/S]
18.99 [R/S]
39.99 [R/S]
23.64 [R/S]

R1: Total rounded sales tax: 9.21
R2: Total invoice: 106.18

Link: http://edspi31415.blogspot.com/2019/10/h...unded.html