src/fed2019/Schedule3.ts

   1 import { Form, TaxReturn } from '../core';
   2 import { AccumulatorLine, ComputedLine, InputLine, ReferenceLine } from '../core/Line';
   3 import { NotFoundError, UnsupportedFeatureError } from '../core/Errors';
   4
   5 import Form1040, { FilingStatus } from './Form1040';
   6 import Form1099DIV from './Form1099DIV';
   7 import Form1099INT from './Form1099INT';
   8 import Form1116 from './Form1116';
   9 import Schedule2 from './Schedule2';
  10
  11 export interface Schedule3Input {
  12   estimatedTaxPayments?: number;
  13 };
  14
  15 export default class Schedule3 extends Form<Schedule3['_lines'], Schedule3Input> {
  16   readonly name = 'Schedule 3';
  17
  18   readonly _lines = {
  19     // Part 1
  20     '1': new ComputedLine((tr): number => {
  21       const f1040 = tr.getForm(Form1040);
  22
  23       const totalForeignTax = (new AccumulatorLine(Form1099DIV, '7')).value(tr) +
  24                               (new AccumulatorLine(Form1099INT, '6')).value(tr);
  25       const limit = f1040.getInput('filingStatus') == FilingStatus.MarriedFilingJoint ? 600 : 300;
  26
  27       if (totalForeignTax < limit) {
  28         const sched2l2 = new ReferenceLine(Schedule2, '2', undefined, 0);
  29         return Math.min(totalForeignTax, f1040.getValue(tr, '12a') + sched2l2.value(tr));
  30       }
  31       return tr.getForm(Form1116).getValue(tr, '33');
  32     }, 'Foreign tax credit'),
  33     // 2 not supported - Credit for child and dependent care expenses. Attach Form 2441
  34     // 3 not supported - Education credits from Form 8863, line 19
  35     // 4 not supported - Retirement savings contributions credit. Attach Form 8880
  36     // 5 not supported - Residential energy credits. Attach Form 5695
  37     // 6a not supported - Form 3800
  38     // 6b not supported - Form 8801
  39     // 6c not supported - Other nonrefundable credits
  40     '7': new ComputedLine((tr): number => {
  41       // Should include 2-6.
  42       return this.getValue(tr, '1');
  43     }),
  44
  45     // Part 2
  46     '8': new InputLine<Schedule3Input>('estimatedTaxPayments'),
  47     // 9 not supported - Net premium tax credit. Attach Form 8962
  48     // 10 not supported - Amount paid with request for extension to file (see instructions)
  49     // 11 not supported - Excess social security and tier 1 RRTA tax withheld
  50     // 12 not supported - Credit for federal tax on fuels. Attach Form 4136
  51     // 13a not supported - Form 2439
  52     // 13b is reserved
  53     // 13c not supported - Form 8885
  54     // 13d not supported - Other refundable credits
  55     '14': new ComputedLine((tr): number => {
  56       // Should include 9-13.
  57       return this.getValue(tr, '8');
  58     }),
  59   };
  60 };