Optimal Taxation of Capital Income in Models with Endogenous Fertility



up from (17b), since labor hours worked are increased. Consumption and
nonhuman wealth unambiguously rise.17 The stock of net foreign assets may
rise or fall. Domestic output and national income are increased.

Source-based regime

As in the long-run n = r* — ρ from (15), the steady state economy is
described by

Un(c,r---p) = (1 - τι)w(τk)T'(r* - P) + k + b,         (18a)

Uc(c,r* — ρ)

k = κ(τ k )[1 T (r* — ρ)],                     (18b)

[ρ + ιτ k r ʌ ]k + ρb + w(τ k )[1 T (r* — p)] = c + g. (18c)
(1 τk)

A change in τl reproduces the same effects obtained under the residence-
based taxation of wealth income. By raising the cost of capital, a hike in
τk ,

17The consequences on c and a can be derived as follows. Keeping τl fixed, (17a) and
(17c) can be written as

c = z(a; τa), za 0; zτa 0;                           (17a’)

c = c(a,τa),ca 0; cτa 0;                          (17c’)

where      U2               =  [UnUcn UcUnn + Ue2(1 τ ι)w*T "]

< 0;


za   (UeUen UnUee)    ; zτa              (UeUen UnUee)

Ca = (ρ + τar*) 0; Cτa = (a + w*T')r* 0.

Totally differentiating (17a’) and (17c’), the following multipliers are obtained

dc = (zacτa cazτa ) 0; da = (cτa zτa ) 0;

a (Za Ca)         ’ dTa (zαCa)      ’

where the condition za >ca , assumed to be satisfied, ensures saddle-point stability.

17



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